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virtual |
Invalidates the specified region of the control (adds it to the control's update region, which is the area that will be repainted at the next paint operation), and causes a paint message to be sent to the control. Optionally, invalidates the child controls assigned to the control.
rect | A xtd::drawing::rectangle that represents the region to invalidate. |
invalidate_children | true to invalidate the control's child controls; otherwise, false. |