PureBasic Forums - English

Posted: **Sat Aug 27, 2022 10:54 pm**

Is GetPixel_ still supported?

Code from an old (working) program

GetCursorPos_(@igPt)
igRGB = GetPixel_(ghDC, igPt\x, igPt\y)

... only returns Black

Posted: **Sat Aug 27, 2022 11:18 pm**

Still working...

Code: Select all

ghDC = GetDC_(GetDesktopWindow_())

GetCursorPos_(@igPt.POINT)
igRGB = GetPixel_(ghDC, igPt\x, igPt\y)
Debug Hex(igRGB)

ReleaseDC_(GetDesktopWindow_(), ghDC)

Posted: **Sun Aug 28, 2022 9:29 am**

When you want to grab a pixel from a video, for example Crunchiroll. this won't work. At least if you have W10 and a computer with DRM protection mechanism. The data is then displayed directly on the screen. Not on the desktop anymore.

Code: Select all

ghDC = GetDC_(GetDesktopWindow_())

GetCursorPos_(@igPt.POINT)
igRGB = GetPixel_(ghDC, igPt\x, igPt\y)

ReleaseDC_(GetDesktopWindow_(), ghDC)

this works fine ....

TFT

Posted: **Sun Aug 28, 2022 10:58 am**

Thanks for your help guys

The original code for the desktop handle was:

Code: Select all

ghDC = GetDC_(0)

I changed that to GetDesktopWindow_() , but the result is the same. So I think there is probably a failure earlier in the code - more testing tonight.

Edit: It was indeed a bug elsewhere!

Posted: **Sun Aug 28, 2022 11:31 am**

tft wrote: Sun Aug 28, 2022 9:29 amWhen you want to grab a pixel from a video, for example Crunchiroll. this won't work.

Using GetDC_(0) works with CrunchyRoll videos for me - the correct pixel color is returned. Both windowed (in-browser) and full-screen playback.

Using Win 10 Pro. Don't know about any DRM settings in Windows.

Posted: **Mon Aug 29, 2022 12:47 am**

BarryG wrote: Sun Aug 28, 2022 11:31 am Using GetDC_(0) works with CrunchyRoll videos for me - the correct pixel color is returned. Both windowed (in-browser) and full-screen playback.

Yes, GetDC_(0) covers the entire 'virtual desktop' across however many monitors there are. Works with any pixel grab for me (Now I have fixed the bug that silently messed it up).

PureBasic Forums - English

[Solved] GetPixel_

[Solved] GetPixel_

Re: GetPixel_

Re: GetPixel_

Re: GetPixel_

Re: GetPixel_

Re: GetPixel_