Problem in displaying RGB32 data

[bmn]

void Custom_window::display()
{
  if(i<5){
   printf("\n Calling Capture function\n");
   uchar* data = (uchar*)function();  //data is in bgr32 bit format
   QPixmap *p;
       // Frame display 
       image = new QImage(data,640,480,QImage::Format_RGB32);
       label->setPixmap(p->fromImage(*image));
       textmessage->append("The path of the file is");
       i++;
 }
      else
           i=0;
 }

void Custom_window::display()
{
  if(i<5){
   printf("\n Calling Capture function\n");
   uchar* data = (uchar*)function();  //data is in bgr32 bit format
   QPixmap *p;
       // Frame display 
       image = new QImage(data,640,480,QImage::Format_RGB32);
       label->setPixmap(p->fromImage(*image));
       textmessage->append("The path of the file is");
       i++;
 }
      else
           i=0;
 }

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Unable to display the image. Need help

[spud]

Your code is basically correct, although you could change it to:

uchar* data = (uchar*)function(); //data is in bgr32 bit format
// Frame display 
QImage image(data, 640, 480, QImage::Format_RGB32);
label->setPixmap(QPixmap::fromImage(image));

uchar* data = (uchar*)function(); //data is in bgr32 bit format
// Frame display 
QImage image(data, 640, 480, QImage::Format_RGB32);
label->setPixmap(QPixmap::fromImage(image));

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Of course you have to be certain that function() returns a pointer to 640*480*4 bytes of data which remain valid until after setPixmap has been called.

So, what do you see? is anything displayed?

[spud]

Sorry, but I just realized that the above code needs data to remain valid for a longer time.
A safer way would be to copy the image data.

QImage image(640, 480, QImage::Format_RGB32);
	memcpy(image.bits(), data, 640*480*4);
	label->setPixmap(QPixmap::fromImage(image));

QImage image(640, 480, QImage::Format_RGB32);
	memcpy(image.bits(), data, 640*480*4);
	label->setPixmap(QPixmap::fromImage(image));

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