I am having this problem. When de dialog is loades, the buttons are as in the top figure. After some times passing the mouse over the buttons, or moving the dialog, a gray board, sometimes incomplete as it is on the Browse button appears. It is not always,
but eventually the board will appear and won't fade until I move the dialog out of the screen and than back to it.

The dialog is made by a static Bitmap with transparency false, and the buttons are transparent true. Otherwasi, the buttons would disappear on mouse over.
How do I make the buttons don't change from the top picture to the bottom picture on redraw caused by mouse over?