My classmates started using Delphi with pascal, but I, like C ++ porgrammer, should use the win32 API. They changed the background color, so I need to know this, but there are some differences.
In delphi, each form looks like it has its own instance, and setting the background background for one window is just a matter of changing one value. Not in the case of win32, where when you change this value, it affects every window using this class (after updating c).
I need to do to clear / erase the background of my window. I can do this with FillRect (..) and it works very well, but I also found WM_ERASEBKGND , which seems to do exactly what I need. They mentioned that if this message succeeds, I must return a non-zero value, but they did not say how to handle it.
So can anything else, then FillRect (and similliar) allow me to erase the window with the brush that I defined, and not the default for the class?
thank
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