QCanvas not showing pixmaps

[Janito Vaqueiro Ferreira Filho]

Hello!
	I'm trying to make a MDI app with a canvas. I put the QCanvasView in the 
View and a QCanvas in the Doc. When I try to setBackgoundPixmap(buffer) it 
doesn't work. Please help me. Here's the code used:

QString sBuf3 = dir + filename;
QRect changedRect;
QPixmap buffer;

if(QFile::exists(sBuf3))
{
	buffer.load(sBuf3, "PNG", 0);
	canvas->setBackgroundPixmap(buffer);
	changedRect.setSize(canvas->size());
	canvas->setChanged(changedRect);
	canvas->update();
}

Please help me fix this problem. ThanQ,

		JVFF

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