I just saw this.
Using Canvas.Draw().
When adding 60 images or more, and scrolling up and down, it is not always drawing the images in the cells i have in an array. Only text is drawed if it should also have text.
I had to add procedure WMHScroll and procedure WMVScroll to the grid.
And when it detect the scroll, i set it to repaint the grid.
Then it is all working.
Just wanted to tell, in case of other have the same issue.