Return-value of the selected Windows-scalefactor ?

[ukoenig]

Hello,

it is possible to define a scalefactor inside the windowdesktop defines.
Does a function exists that returns the selected value
Possible values are 100 ( normal ), 125 and 150 %

The problem GETCURSORPOS() works only with selecting 100 % scalefactor
other selections must be adjusted with a defined factor :

local hDeskTop := GETDC(0)
local a := GETCURSORPOS()
// Left Top
local nColor := GETPIXEL( hDeskTop, a[2] * nMonScale, a[1] * nMonScale )



regards
Uwe

[Antonio Linares]

Dear Uwe,

https://stackoverflow.com/questions/32586883/windows-scaling

This seems to be what you are looking for:

Code: Select all  Expand view

#include "FiveWin.ch"

#define VERTRES          10
#define DESKTOPVERTRES  117

function Main()

   local hDC := GetDC( GetDesktopWindow() )
   local nLogicalScreenHeight  := GetDeviceCaps( hDC, VERTRES )
   local nPhysicalScreenHeight := GetDeviceCaps( hDC, DESKTOPVERTRES )
   local nScreenScalingFactor  := nPhysicalScreenHeight / nLogicalScreenHeight
   
   MsgInfo( nScreenScalingFactor ) // 1.00 is 100%, 1.25 is 125%, etc

   ReleaseDC( GetDesktopWindow(), hDC )

return nil

[ukoenig]

Dear Antonio,

thank You very much
Your solution works perfect and is tested with the colorpicker
the scalefactor is autodetected now



best regards
Uwe