Transparency is actually simulated by drawing the pixels of the Parent, which is the form. ┬áTherefore you only see the form pixels, stacking effects don’t work. One approach is to just draw the images in the form’s Paint event, or consider WPF which has a very different rendering model that easily supports transparency.

 

Creating a transparent cutout within a form

See this

Feel free to comment if you can add help to this page or point out issues and solutions you have found. I do not provide support on this site, if you need help with a problem head over to stack overflow.

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