CODEWITHSUNDEEP
.netwinformsgdi+gdionpaint
stigzler
stigzler

Reputation: 1003

Stopping a child control invalidating a parent control

I am making a winforms designer control. The move/resize boxes are essentially pictureboxes added as child controls to a parent picturebox control (call it 'Canvas'). All the actual drawing is done in the 'Canvas' pictureboxe's OnPaint Event, using the child pictureboxes for the locations and sizes. This is done via a loop, so all images/text gets drawn in one OnPaint event.

The problem is that each child control invalidates the parent 'Canvas' control, thus the same images/text get drawn repeatedly rather than just once. So, 5 child pictureboxes, Canvas gets redrawn 5 times....

The pictureboxes have to be child controls. Is there any way to stop these child controls automatically invalidating their parent control?

Upvotes: 0

Views: 99

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