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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