How to display image that I already edit with "cv::Line" in Gui?

[Mawarditaman]

I have a program to simply draw line in mat image. I draw a line in it and when I display it error. This my algorithm that I already try:

1. Load image use mat.read
2. Draw line in image
3. Convert image from bgr2rgb
4. Convert mat image to Qimage
5. Display qimage with Format_RGB888

And it is not work. How I fix it?

[SGaist]

Hi and welcome to devnet,

Can you show the code you are using ?
What exactly do you expect ?
What exactly do you get ?