Draw image to screen with transparency

[coco2]

Is it possible to draw an image to the screen with transparency? The method in the built in help file doesn't seem to work for me. IE I'm trying to create an image using:

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CreateImage(0, 600, 600, 32, #PB_Image_Transparent)

And then drawing to the image using vector functions and subsequently drawing the image to screen does not keep the transparency.

[coco2]

I found it, DrawAlphaImage works

Does anyone know why the coordinates of DrawAlphaImage do not match up with the current window? I'm using a 4K screen and the width is right but the height appears to be 1440. So when I draw an image at Y=1000 it's nearly at the bottom of the screen but the 4K resolution is 3840x2160.

[SPH]

Please : a small exemple to illustrate that ?

[coco2]

If I run this on a 4K monitor:

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DWidth.i = DesktopWidth(0)
DHeight.i = DesktopHeight(0)
OpenWindow(0, 0, 0, DWidth, DHeight, "Test", #PB_Window_Maximize | #PB_Window_BorderLess)
InitSprite()
OpenWindowedScreen(WindowID(0), 0, 0, WindowWidth(0), WindowHeight(0), #False, 0, 0, #PB_Screen_WaitSynchronization)
Debug "Resolution detected: " + DWidth + " x " + DHeight
Debug "Resolution effective: " + WindowWidth(0) + " x " + WindowHeight(0)
InitKeyboard()
Repeat
  Event = WaitWindowEvent()
  ExamineKeyboard()
  Esc_Pressed = KeyboardPushed(#PB_Key_Escape)
Until Event = #PB_Event_CloseWindow Or Esc_Pressed

the result I get is:

Resolution detected: 3840 x 2160
Resolution effective: 2560 x 1440

I don't get the full 4K resolution when I have a WindowedScreen.

Note: edited code to only check the first monitor

[miso]

You iterate trough your monitors to get screen data, but you store and use the parameters of the last one only. (The primary (0 indexed) is overwritten, when you have more than one monitor.)

[coco2]

Yes but why is it showing the wrong size when I only have one 4K monitor?

[miso]

Hmm, in that case, I don't have an answer.

[Fig]

You juste have one monitor, but do you happen to have more than one windows desktop ?

[HeX0R]

change to

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OpenWindowedScreen(WindowID(0), 0, 0, WindowWidth(0) * DesktopResolutionX(), WindowHeight(0) * DesktopResolutionY(), #False, 0, 0, #PB_Screen_WaitSynchronization)

and enable DPI awareness in compiler options

[coco2]

I see, it was because I have my desktop set to 150%.

Do you know why when I turn on DPI aware executable I can't alt+tab back to the desktop and it doesn't show the debug window?