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Why are there missing MouseLeave events with fast mouse movement?

I created my own toolbar from scratch using PictureBoxes. I use the
MouseEnter and MouseMove events to change the image on the PictureBox
controls so that it makes the "button" look selected, pressed, disabled
or unselected.

What I noticed however is that if I move the mouse quick enough from
one button to another or to some where other than the "toolbar", it is
possible that the MouseLeave event never gets fired which results in
the image not getting updated for my button.

Why am I missing events? It seems to me that the .NET Framework cannot
keep up with the speed of mouse movement and is liable to miss raising
these events.

How can I reliably make sure that when the mouse leaves a button, I
always get an event regardless how fast the mouse moves?

Thanks for your help
Johann Blake

Nov 17 '05 #1
0 1421

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