EnumDisplaySettings() 和ChangeDisplaySettings(),
function DynamicResolution(X, Y: word): BOOL;
var
lpDevMode: TDeviceMode;
begin
Result := EnumDisplaySettings(nil, 0, lpDevMode);
if Result then
begin
lpDevMode.dmFields := DM_PELSWIDTH Or DM_PELSHEIGHT;
lpDevMode.dmPelsWidth := X;
lpDevMode.dmPelsHeight := Y;
Result := ChangeDisplaySettings(lpDevMode, 0) = DISP_CHANGE_SUCCESSFUL;
end
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
if DynamicResolution(640, 480) then
ShowMessage(''''Now is 640*480'''');
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
if DynamicResolution(800, 600) then
ShowMessage(''''Now is 800*600'''');
end;
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