BlitzMax / C programmers?

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Here's that file I tried to send:
Function SetUpPixelFormat:Int(hDC,multisample=0,colordepth=32)
	lpPixelFormat:PIXELFORMATDESCRIPTOR=New PIXELFORMATDESCRIPTOR
	lpPixelFormat.nSize=40
	lpPixelFormat.nVersion=1
	lpPixelFormat.dwFlags=PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER|PFD_DRAW_TO_WINDOW
	lpPixelFormat.iPixelType=PFD_TYPE_RGBA
	lpPixelFormat.cColorBits=colordepth
	lpPixelFormat.cRedBits=8
	lpPixelFormat.cGreenBits=8
	lpPixelFormat.cBlueBits=8
	lpPixelFormat.cAccumBits=16
	lpPixelFormat.cDepthBits=16
	lpPixelFormat.cStencilBits=8
	lpPixelFormat.dwLayerMask=PFD_MAIN_PLANE
	If multisample
		If SUPPORT_WGLCHOOSEPIXELFORMATARB
			wglChoosePixelFormatARB(hDC,[WGL_DRAW_TO_WINDOW_ARB,GL_TRUE,WGL_SUPPORT_OPENGL_ARB,GL_TRUE,WGL_ACCELERATION_ARB,WGL_FULL_ACCELERATION_ARB,WGL_COLOR_BITS_ARB,24,WGL_ALPHA_BITS_ARB,8,WGL_DEPTH_BITS_ARB,16,WGL_DOUBLE_BUFFER_ARB,GL_TRUE,WGL_SAMPLE_BUFFERS_ARB,GL_TRUE,WGL_SAMPLES_ARB,multisample,0,0],[0.0,0.0],1,Varptr lPixelFormat,Varptr numFormats)
		EndIf
		Else
		lPixelFormat=ChoosePixelFormat(hDC,lpPixelFormat)
		If Not lPixelFormat Return
	EndIf
	result=SetPixelFormat(hDC,lPixelFormat,lpPixelFormat)
	lpPixelFormat=Null
	'Notify result+" = Pixel setup result"
	Return result
EndFunction