transparency:
DrawDibDraw
GdipSetImageAttributesColorKeys
SetLayeredWindowAttributes
Creating irregularly shaped FoxPro form using transparency color key
Displaying bitmap using the AlphaBlend function
Displaying dimmed window behind VFP top-level form
Displaying hypertext links with the SysLink control (VFP9, Comctl32.dll)
GDI+: Color Transparency
GDI+: loading image file, drawing on it, saving the result to another file
How to draw custom Window Caption on FoxPro form
Round FoxPro form
Semi-transparent Form
Testing Transparent Menu Class with top-level form (requires VFP9)
Transparent Menu Class (requires VFP9)