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// ***** BEGIN LICENSE BLOCK *****
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// * Version: MPL 1.1
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// *
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// * The contents of this file are subject to the Mozilla Public License Version
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// * 1.1 (the "License"); you may not use this file except in compliance with
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// * the License. You may obtain a copy of the License at
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// * http://www.mozilla.org/MPL/
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// *
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// * Software distributed under the License is distributed on an "AS IS" basis,
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// * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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// * for the specific language governing rights and limitations under the
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// * License.
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// *
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// * The Original Code is TurboPower SysTools
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// *
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// * The Initial Developer of the Original Code is
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// * TurboPower Software
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// *
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// * Portions created by the Initial Developer are Copyright (C) 1996-2002
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// * the Initial Developer. All Rights Reserved.
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// *
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// * Contributor(s):
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// *
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// * ***** END LICENSE BLOCK *****
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//---------------------------------------------------------------------------
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#include <vcl\vcl.h>
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#pragma hdrstop
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#include "BcdCalU.h"
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//---------------------------------------------------------------------------
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#pragma package(smart_init)
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#pragma link "StBcd"
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#pragma link "StStrL"
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#pragma resource "*.dfm"
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TBCDCalcDlg *BCDCalcDlg;
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//---------------------------------------------------------------------------
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__fastcall TBCDCalcDlg::TBCDCalcDlg(TComponent* Owner)
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: TForm(Owner)
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{
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::FormCreate(TObject *Sender)
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{
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Memo1->Lines->Strings[0] = "";
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PendOp = 0;
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DFHold = 0;
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XBuffer = "0";
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ClearOnNext = false;
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}
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//---------------------------------------------------------------------------
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extern System::AnsiString __fastcall BytesToString(char * Value, Cardinal Size)
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{
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Cardinal Index;
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String S, Res;
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Res.SetLength(2*Size);
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for (Cardinal I = 1; I <= Size; I++) {
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Index = I*2;
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S = HexBL(Value[I-1]);
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Res[(Index)-1] = S[1];
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Res[Index] = S[2];
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};
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return Res;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::FormKeyPress(TObject *Sender, char &Key)
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{
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char HldOp;
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int L;
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TBcd BCD1;
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String S;
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if (Key == 13) {
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if (XBuffer == "0") {
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XBuffer = Memo1->Lines->Strings[0];
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}
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else {
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EqualBtnClick(Sender);
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XBuffer = "0";
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};
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Key = 0;
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ClearOnNext = true;
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};
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if (BCDChar.Contains(Key)) {
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if (Key == 'p') {
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S = Memo1->Lines->Strings[0];
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if (S[1] != '-') {
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S.Insert('-', 1);
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}
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else {
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S.Delete(1, 1);
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}
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Memo1->Lines->Strings[0] = S;
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ValBcd_C(S, BCD1);
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BCDString->Text = BytesToString((char *)BCD1, sizeof(BCD1));
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Key = 0;
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}
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else {
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if (ClearOnNext) {
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Memo1->Lines->Strings[0] = "";
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ClearOnNext = false;
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};
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};
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};
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if (BCDOper.Contains(Key)) {
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if ((Key != 's') && (Key != 'e') && (Key != 'l')) {
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if (Memo1->Lines->Strings[0] == "") {
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Memo1->Lines->Strings[0] = "0";
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};
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if (XBuffer != "0") {
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EqualBtnClick(Sender);
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}
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XBuffer = Memo1->Lines->Strings[0];
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ValBcd_C(XBuffer, BCD1);
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BCDString->Text = BytesToString((char *)BCD1, sizeof(BCD1));
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PendOp = Key;
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Key = 0;
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ClearOnNext = true;
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}
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else {
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HldOp = PendOp;
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PendOp = Key;
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EqualBtnClick(Sender);
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PendOp = HldOp;
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Key = 0;
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};
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};
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if (BCDChar.Contains(Key)) {
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S = Memo1->Lines->Strings[0];
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L = S.Length();
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if (L < Memo1->MaxLength) {
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Memo1->Lines->Strings[0] = S + Key;
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};
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Key = 0;
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};
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Memo1->SetFocus();
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Memo1->SelStart = Memo1->Text.Length();
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Memo1->SelLength = 0;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::ClearBtnClick(TObject *Sender)
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{
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XBuffer = "0";
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Memo1->Lines->Strings[0] = "0";
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BCDString->Text = "";
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PendOp = 0;
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ClearOnNext = true;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::ClearEntryBtnClick(TObject *Sender)
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{
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Memo1->Lines->Strings[0] = '0';
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ClearOnNext = true;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::SevenKeyClick(TObject *Sender)
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{
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char c = '7';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::EightKeyClick(TObject *Sender)
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{
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char c = '8';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::NineKeyClick(TObject *Sender)
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{
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char c = '9';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::FourKeyClick(TObject *Sender)
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{
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char c = '4';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::FiveKeyClick(TObject *Sender)
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{
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char c = '5';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::SixKeyClick(TObject *Sender)
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{
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char c = '6';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::OneKeyClick(TObject *Sender)
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{
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char c = '1';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::TwoKeyClick(TObject *Sender)
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{
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char c = '2';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::ThreeKeyClick(TObject *Sender)
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{
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char c = '3';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::ZeroBtnClick(TObject *Sender)
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{
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char c = '0';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::DecKeyClick(TObject *Sender)
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{
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FormKeyPress(Sender, DecimalSeparator);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::PlusMinusBtnClick(TObject *Sender)
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{
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char c = 'p';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::AddBtnClick(TObject *Sender)
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{
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char c = '+';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::SubBtnClick(TObject *Sender)
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{
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char c = '-';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::MulBtnClick(TObject *Sender)
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{
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char c = '*';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::DivBtnClick(TObject *Sender)
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{
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char c = '/';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::SqrtBtnClick(TObject *Sender)
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{
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char c = 's';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::ExpBtnClick(TObject *Sender)
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{
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char c = 'e';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::LnBtnClick(TObject *Sender)
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{
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char c = 'l';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::XtoYBtnClick(TObject *Sender)
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{
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char c = '^';
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FormKeyPress(Sender, c);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::EqualBtnClick(TObject *Sender)
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{
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Extended RV;
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String S;
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TBcd BCD;
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if (PendOp != 0) {
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S = Memo1->Lines->Strings[0];
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if (S == "") {
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MessageBeep(0);
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return;
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};
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switch (PendOp) {
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case '+' : {
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RV = StrToFloat(XBuffer) + StrToFloat(S);
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case '-' : {
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RV = StrToFloat(XBuffer) - StrToFloat(S);
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case '*' : {
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RV = StrToFloat(XBuffer) * StrToFloat(S);
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case '/' : {
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RV = StrToFloat(S);
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if (RV == 0) {
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Memo1->Lines->Strings[0] = "Divide by zero error";
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PendOp = 0;
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ClearOnNext = false;
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}
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else {
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RV = StrToFloat(XBuffer) / StrToFloat(S);
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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};
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break;
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};
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case 's' : {
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RV = sqrt(StrToFloat(S));
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case 'e' : {
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RV = exp(StrToFloat(S));
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case 'l' : {
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RV = log(StrToFloat(S));
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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case '^' : {
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RV = exp(log(StrToFloat(XBuffer)) * StrToFloat(S));
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Memo1->Lines->Strings[0] = FloatToStr(RV);
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ValBcd_C(Memo1->Lines->Strings[0], BCD);
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BCDString->Text = BytesToString((char *)BCD, sizeof(BCD));
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break;
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};
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};
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};
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PendOp = 0;
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ClearOnNext = true;
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Memo1->SetFocus();
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Memo1->SelStart = 0;
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Memo1->SelLength = 0;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::Copy1Click(TObject *Sender)
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{
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Memo1->SelectAll();
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Memo1->CopyToClipboard();
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Memo1->SelStart = 0;
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::Paste1Click(TObject *Sender)
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{
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String S = "";
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String Nums = "";
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bool IsNeg = false;
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S = Clipboard()->AsText;
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Nums = "0123456789";
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Nums = Nums + Sysutils::DecimalSeparator;
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if (S[1] == '-') {
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IsNeg = true;
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S = S.SubString(2, S.Length() - 1);
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}
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if (IsStrNumericL(S, Nums)) {
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if (IsNeg) {
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S = "-" + S;
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}
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Memo1->Lines->Strings[0] = S;
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}
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::BSBtnClick(TObject *Sender)
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{
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Memo1->Lines->Strings[0] = Memo1->Lines->Strings[0].SubString(1, Memo1->Lines->Strings[0].Length() - 1);
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if (Memo1->Lines->Strings[0].Length() == 0)
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ClearBtnClick(ClearBtn);
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}
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//---------------------------------------------------------------------------
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void __fastcall TBCDCalcDlg::FormShow(TObject *Sender)
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{
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BCDChar << '0' << '1' << '2' << '3' << '4' << '5' << '6' << '7' << '8' << '9' << DecimalSeparator << 'p';
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BCDOper << '+' << '-' << '/' << '*' << '^' << 'e' << 'l' << 's' << '=';
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}
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//---------------------------------------------------------------------------
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