Passing Function ( with params ) to C++ code.
BlitzMax Forums/BlitzMax Programming/Passing Function ( with params ) to C++ code.
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I want to pass a BlitzMax function ( which takes several parameters and returns another ) to a CPP function. The callback function I pass looks like this : Function WinProc(hWnd:Int,Msg:Int,wParam:Int,lParam:Int) But I'm not entirely sure how the BMax Extern "C" declaration should look, nor how the CPP function which receives it should look. |
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Function WinProc( hwnd%, wparam%, lparam% ) Print "blah -- doing just this in a WndProc/WinProc function may crash the program, but the correct functionality of the Proc functions is beyond the scope of this example" End Function Extern "C" Function passCallback( someCallback:Int(h%,w%,l%) ) End Extern passCallback( WinProc ) |
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Hmm, could have sworn that's how I had it before. It works now anyway, so thanks for that Noel. No worries about the contents of the function. I know what has to be done within a WinProc callback. At least I think I do, lol. This is the last major hurdle with the TV3D wrapper. Once I have the window creation working, I should be able to get a test app running. |