Author Topic: Transparant forms RPI3  (Read 386 times)


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Transparant forms RPI3
« on: May 24, 2022, 04:10:12 pm »
Does anybody have example code to transparant your form? like alpha blend

Working with  LAZARUS v.2.2.0 and FPC 3.2.0

Cross compiling from WIN32 to Raspberry3 BullsEye

Greetz, Wouter van Wegen


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Re: Transparant forms RPI3
« Reply #1 on: June 29, 2022, 10:12:45 am »

I don't know if this is what you want, but in the Form properties, you have 2 parameters:


If you set AlphaBlend to True and AlphaBlendValue to 128 for example, your form and all tools inside it would be semi transparent.



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Re: Transparant forms RPI3
« Reply #2 on: June 29, 2022, 11:32:20 am »
General point if I may. Be very cautious of the RPi's homegrown window manager (i.e. desktop environment), since it appears to omit passing various hints, metrics and "understood relations" to the widget set.

I've got a very unpleasant situation trying to run (somebody else's) app on an RPi, while running fine on a PC it's unusable on an RPi unless the screen is something like 1920x1200 and in the end I had to get a tiny 4K display which resulted in unreadable text.

Needless to say all involved parties disclaimed responsibility.

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