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Delphi(Pascal) code:
var
Pal: HPalette;
LogPal: TMaxLogPalette;
DC: HDC;
count: Integer;
begin
DC := GetDC(0);
// »ñÈ¡µ±Ç°ÆÁÄ»µÄµ÷É«°å
Pal := CreateHalftonePalette(DC);
// »ñÈ¡µ±Ç°ÆÁÄ»µÄµ÷É«°åµÄÑÕÉ«±í
count := GetPaletteEntries(Pal, 0, 256, LogPal.palPalEntry);
// ÏÂÃæÕâ¸öº¯Êýµ÷ÓÃʧ°Ü£¬¿ÉÄÜÊÇÎÒµÄÏÔʾÆ÷ÉèÖò»ÊÇ256É«µÄÔ­Òò
// count := GetSystempaletteEntries(DC, 0, 256, LogPal.palPalEntry);
ShowMessage(IntToStr(count));
DeleteObject(Pal);
ReleaseDC(0, DC);
end;



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Delphi(Pascal) code:

procedure TForm1.Button1Click(Sender: TObject);
begin
if colordialog1.Execute then
begin
end;
end;




procedure TForm1.Button1Click(Sender: TObject);
begin
  if colordialog1.Execute then
  begin
  edit1.Font.Color:=colordialog1.Color;
  end;
end;
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