PureBasic Forums - English

Posted: **Mon Feb 05, 2018 6:04 am**

It would be really helpful if I could find out the display scaling factor for each connected display. Calculating this for the primary display is easy enough, as shown in this code:

Code: Select all

ExamineDesktops()
myDesktopWidth = DesktopWidth(0)
myDesktopHeight = DesktopHeight(0)
Debug "myDesktopWidth=" + myDesktopWidth + ", myDesktopHeight=" + myDesktopHeight
myHorzRes = GetDeviceCaps_(GetDC_(GetDesktopWindow_()), #HORZRES)
myVertRes = GetDeviceCaps_(GetDC_(GetDesktopWindow_()), #VERTRES)
Debug "myHorzRes=" + myHorzRes + ", myVertRes=" + myVertRes
myDisplayScaling = Round(myDesktopWidth * 100 / myHorzRes, #PB_Round_Nearest)
Debug "myDisplayScaling=" + myDisplayScaling + "%"

which correctly returns this:

Code: Select all

[15:01:43] myDesktopWidth=1366, myDesktopHeight=768
[15:01:43] myHorzRes=1093, myVertRes=614
[15:01:43] myDisplayScaling=125%

However, my second monitor has a display size of 3840x2160 with a display scaling set to 175%. I can get the display size using DesktopWidth(1) and DesktopHeight(1), but I can't find a way to determine the 'horizontal resolution' of a display other than the primary display. Any suggestions?

Posted: **Fri Mar 02, 2018 2:04 am**

Have you checked out GetScaleFactorForMonitor?

I think thats what you are after. But I do not know how to use it.

Posted: **Fri Mar 02, 2018 6:17 am**

Thanks for that. I'll see if I can work out what I need using GetScaleFactorForMonitor.

PureBasic Forums - English

Can I get the scaling factor per display?

Can I get the scaling factor per display?

Re: Can I get the scaling factor per display?

Re: Can I get the scaling factor per display?