C# - Drawing top image over background image (alpha channel) - WinForm

Question

I\'ve got this topimage with alpha channel in it and I need to put this image over another background image, while the alpha channel from the top image stays intact obviously. <

Answer 1

Ok, I will try to answer: after loading the image, like this more or less, pseudocode:

Bitmap bmp = new Bitmap("MyCooolSemiTransparentImage.png"); 
bmp.MakeTransparent(colorHaveToBeRenderedTransparent);

colorHaveToBeRenderedTransparent is a color wich results non transparent after loading it into Bitmap object.

EDIT

if alphachannel is ok, here is a simple tutorial how to draw in image on WinForms:

msdn: DrawImage

Call method provided in yuor forms OnPaint override and you will get what you want.

Hope this helps.

Regards.