Hello pluggers, I need to take a demo program that displays a PNG file via Xlib and modify the output. It is a C program, not C# or C++. Has xlib been replaced by xcb? I'm developing this for an HDMI projector hooked to a Raspberry Pi 3 model B.
Preferably, I don't want to pull out cairo or any other graphical library that is heavier than Xlib. If I have to pull out another tool, what should I use? I need to remove the title bar and all areas that can be clicked on, the image is a target for calibration. The program that I'm trying to fix ASAP uses opencv, a computer vision package. Obviously, the program calculates or accepts user input on where the target should project and that has to work. So the image can't pop up willy nilly on the screen the way it does in the current demo program.
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