preventing windowrepainting while resize

[Magnus]

How do I prevent mainwindow from repaint content while the window still resizes ??

I have tried LockWindowupdate in OnWindowChanged/OnWindowChanging but i doesn't work.

very greatful for any answer in this matter

/Magnus

[Jason Teagle]

You could call SystemParametersInfo(SPI_SETDRAGFULLWINDOWS, FALSE, NULL, 0) to manually switch off the 'Show window contents while dragging' feature. This causes the repaint during a sizing. You can then set it back to TRUE afterwards.