Here is the problem: you mention "bitmap coordinates", and don't mention what to click on. If we assume that this is a click on a
PictureBox
, the pixel coordinates are exactly the same as the coordinates of this control. That's all.
(If your control is different (but why?), you can re-calculate the coordinate translation throw screen coordinates or taking into account control's locations.)
Now, using
PictureBox
is questionable. It may or may not be useful, but usually not: it creates hassles without any help, only eats additional resources and even more of your development time to be spent for nothing. Please see my past answers:
Append a picture within picturebox[
^],
draw a rectangle in C#[
^],
How do I clear a panel from old drawing[
^].
—SA