procedure TForm1.Button1Click(Sender: TObject);
var
DC: THandle; // display context
Bits: Integer; // bits per pixel
HRes: Integer; // horizontal resolution
VRes: Integer; // vertical resolution
DM: TDevMode; // to Save EnumDisplaySettings
ModeNum: Longint; // video mode number
Ok: Bool;
fre: Integer; // refresh rate
begin
DC := GetDC(Handle);
Bits := GetDeviceCaps(DC, BITSPIXEL);
HRes := GetDeviceCaps(DC, HORZRES);
VRes := GetDeviceCaps(DC, VERTRES);
fre := GetDeviceCaps(DC, VREFRESH);
// Show Current Resolution
Edit1.Text := Format('%d bit, %d x %d', [Bits, HRes, VRes]);
ReleaseDC(Handle, DC); // Show all modes available ModeNum := 0; // The 1st one
ModeNum := 0;
EnumDisplaySettings(nil, ModeNum, DM);
ListBox1.Items.Add(Format('%d bit, %d x %d bei %d Hz', [DM.dmBitsPerPel,
DM.dmPelsWidth, DM.dmPelsHeight, Dm.dmDisplayFrequency]));
Ok := True;
while Ok do
begin
Inc(ModeNum); // Get next one
Ok := EnumDisplaySettings(nil, ModeNum, DM);
ListBox1.Items.Add(Format('%d bit, %d x %d bei %d Hz', [DM.dmBitsPerPel,
DM.dmPelsWidth, DM.dmPelsHeight, Dm.dmDisplayFrequency]));
end;
end;
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