type
TForm1 = class(TForm)
ComboBox1: TComboBox;
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
function NewComboProc(wnd:HWND; uMsg:UINT; wParam:WPARAM; lParam:LPARAM):integer; stdcall;
var
r,r1:TRect;
begin
case uMsg of
WM_PAINT: begin
GetWindowRect(wnd,r);
SetWindowRgn(wnd,CreateRectRgn(2, 2, r.Right-r.Left - 2, r.Bottom-r.Top - 2), True);
end;
WM_CTLCOLORLISTBOX:
begin
GetWindowRect(wnd,r);
GetWindowRect(lParam,r1);
if (r.Left=r1.Left) and (r.Right=r1.Right) then
begin
InflateRect(r1,-2,0);
SetWindowPos(lParam,0,r.Left+2,r.Bottom-2,r1.Right-r1.Left,r1.Bottom-r1.Top,SWP_NOZORDER);
end
end;
end;
result:=CallWindowProc(Pointer(GetWindowLong(wnd,GWL_USERDATA)),wnd,uMsg,wParam,lParam);
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
SetWindowLong(ComboBox1.Handle,GWL_USERDATA,SetWindowLong(ComboBox1.Handle, GWL_WNDPROC, LPARAM(@NewComboProc)))
end;
end.
Автор: Krid
Статья Удалить границу у TComboBox (2) раздела Компоненты и Классы Списки может быть полезна для разработчиков на Delphi и FreePascal.
