INNO Setup: How to get the primary monitor's resolution?

Question

I\'m trying to script an installer with INNO and I am stuck at a point where I need to get the screen resolution of the machine in which the setup is running and use that va

Answer 1

You'll need some code to get the current resolution. Then you can add those values to the [Icon] entry to create the shortcut. Here's some code to get you started:

[Setup]
AppName=DisplayResoltution
AppVerName=DisplayResoltution
DefaultDirName=DisplayResoltution
DisableStartupPrompt=true
Uninstallable=false

[Files]
Source: "C:\util\innosetup\Examples\MyProg.exe"; DestDir: "{app}"; Flags: ignoreversion
; NOTE: Don't use "Flags: ignoreversion" on any shared system files

[Icons]
Name: "{group}\My Program"; Filename: "{app}\MyProg.exe"; Parameters: {code:GetParams}


[Code]
// Functions to get BPP & resolution

function DeleteDC (hDC: Integer): Integer;
 external 'DeleteDC@GDI32 stdcall';

function CreateDC (lpDriverName, lpDeviceName, lpOutput: String; lpInitData: Integer): Integer;
 external 'CreateDCA@GDI32 stdcall';

function GetDeviceCaps (hDC, nIndex: Integer): Integer;
 external 'GetDeviceCaps@GDI32 stdcall';

Const
    HORZRES = 8;    //horizontal resolution
    VERTRES = 10;   //vertical resolution
    BITSPIXEL = 12; //bits per pixel
    PLANES = 14;    //number of planes (color depth=bits_per_pixel*number_of_planes)
var
xres, yres, bpp, pl, tmp: Integer;

function InitializeSetup(): Boolean;
  var 
      hDC: Integer;
begin

    //get resolution & BPP
    hDC := CreateDC('DISPLAY', '', '', 0);
    pl := GetDeviceCaps(hDC, PLANES);
    bpp := GetDeviceCaps(hDC, BITSPIXEL);
    xres := GetDeviceCaps(hDC, HORZRES); //horizontal resolution
    yres := GetDeviceCaps(hDC, VERTRES); //vertical resolution
    tmp := DeleteDC(hDC);
    bpp := pl * bpp;   //color depth

    MsgBox( 'Current resolution is ' + IntToStr(xres) +
        'x' + IntToStr(yres) +
        ' and color depth is ' + IntToStr( bpp )
        , mbInformation, MB_OK );

    Result := true;
end;

function GetParams(def: string): string;
var
sTemp : string;
begin
  sTemp := 'xres=' + IntToStr(xres) + ' yres=' +IntToStr(yres);
  result := sTemp;
end;

Code adapted from http://www.vincenzo.net/isxkb/index.php?title=Detect_current_display_resolution_and_color_depth