resolved

[CookieMaster]

snip

[mariushm]

I never worked with QT but just by googling "QImage" I see the functions that class has : http://doc.qt.io/qt-4.8/qimage.html

 

I suppose the most brute force-ish (as in silly slow but works) method would be SetPixel .. just use a couple of FOR's to draw a line horizontally and one vertically by writing one pixel at a time.

 

Look into the QPainter class, that's probably more suitable for you : http://doc.qt.io/qt-5/qpainter.html

That has draw line, draw polyline, draw rect , fill area, etc