Wiseguy
Re: Painting an overlay on a QLabel->QImage
You don't need to compare.hen you want to save, compare each pixel to the backup.
Just have two pixmaps.
Draw the original in to the first pixmap and show it.
When the user draws, draw it in to the other pixmap *and* on to the original (and don't show the second pixmap), this way you can show the composite result, while having both versions separate.
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S.O.L.I.D principles (use them!):
https://en.wikipedia.org/wiki/SOLID_...iented_design)
Do you write clean code? - if you are TDD'ing then maybe, if not, your not writing clean code.
Expert
Re: Painting an overlay on a QLabel->QImage
yeah, I already said that in my other paragraph.
If you have a problem, CUT and PASTE your code. Do not retype or simplify it. Give a COMPLETE and COMPILABLE example of your problem. Otherwise we are all guessing the problem from a fabrication where relevant details are often missing.
Wiseguy
Re: Painting an overlay on a QLabel->QImage
Not quite:
This is not necessary.When you want to save, compare each pixel to the backup.
==========================signature=============== ==================
S.O.L.I.D principles (use them!):
https://en.wikipedia.org/wiki/SOLID_...iented_design)
Do you write clean code? - if you are TDD'ing then maybe, if not, your not writing clean code.
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