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01.procedure TPortForm.FormCreate(Sender: Tobject);
02.var hr :thandle;
03.begin
04.hr:=createroundrectrgn(0,0,width,height,20,20);
05.setwindowrgn(handle,hr,true);
06.end;
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01.procedure TPortForm.FormCreate(Sender: Tobject);
02.var hr :thandle;
03.begin
04.hr:=createroundrectrgn(1,1,width-2,height-2,20,20);
05.setwindowrgn(handle,hr,true);
06.end;
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01.procedure TForm1.FormPaint(Sender: TObject);
02.var
03.DC: HDC;
04.Pen: HPen;
05.OldPen: HPen;
06.OldBrush: HBrush;
07.begin
08.DC := GetWindowDC(Handle);
09.Pen := CreatePen(PS_SOLID, 1, clGray);
10.OldPen := SelectObject(DC, Pen); //ÔØÈë×Ô¶¨ÒåµÄ»±Ê,±£´æÔ»±Ê
11.OldBrush := SelectObject(DC, GetStockObject(NULL_BRUSH));//ÔØÈë¿Õ»Ë¢,±£´æÔ»Ë¢
12.RoundRect(DC, 0, 0, Width-1, Height-1,21,21); //»±ß¿ò
13.SelectObject(DC,OldBrush);//ÔØÈëԻˢ
14.SelectObject(DC,OldPen); // ÔØÈëÔ»±Ê
15.DeleteObject(Pen);
16.ReleaseDC(Handle, DC);
17.end;
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function ValidatePID(const APID: string): string;
{ÄÚ²¿º¯Êý,È¡Éí·ÝÖ¤ºÅУÑéλ,×îºóһλ,¶Ô18λÓÐЧ}
function GetVerifyBit(sIdentityNum: string): Char;
var
nNum: Integer;
begin
Result := #0;
nNum := StrToInt(sIdentityNum[1]) * 7 +
  ......
{ º¯Êý : RESULTSTRING = HexToBin(HEXSTRING)
{ Ä¿µÄ : °ÑÊ®Áù½øÖÆ×Ö·û´®×ª»»Îª¶þ½øÖÆ×Ö·û´®
{
{===============================================================}
{ º¯Êý : RESULTINTEGER = HexCharToInt(HEXCHAR)
{ Ä¿µÄ : ת»»Ò»¸öÊ®Áù½øÖÆ×Ö·ûΪÕûÊý
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procedure TForm1.Button1Click(Sender: TObject);
Var
Num: Integer;
Begin
Try
Num:=StrToInt(Edit1.Text);
Edit2.Text:=IntToStr(Num*Num);
Except
On EConvertError Do ShowMessage(Edit1.Text+'ÎÞ·¨×ª³ÉÕûÊý!');
......