background image get disappear and get black

[amitsharma_ujj]

Hello friends....
My application get crashed after some transactions of screens, first the background image get disappear and get black and then the application get crashed,I think its due to so many screens in application,is there any limitations for no. of images and screens.and also i am facing error like:

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[Qt Message] Could not create CFbsBitmap.....
[Qt Message] QPainter::begin: Cannot paint on a null pixmap
[Qt Message] QPainter::begin: Cannot paint on a null pixmap
[Qt Message] QPainter::setRenderHint: Painter must be active to set rendering hints
[Qt Message] QPainter::setRenderHint: Painter must be active to set rendering hints
[Qt Message] QPainter::begin: Cannot paint on a null pixmap...

for number of time and till then application get crashed.......

if anyone have any idea for this so plz help......
thanks
Amit......

[danhicksbyron]

You're describing the usual symptoms of running out of heap. This usually occurs because the image facilities are being misused, though it's also possible that you have an out-and-out leak. Very rarely the application is actually large enough to require an enlarged heap.