Hi all,

I have a program in which two widgets are connected together. One widget displays an image and upon a mouse event (press) it passes the co-ordinates (in the form of a QPoint) to the other widget. My hope is that this Widget then displays a cropped version of the other image.

I have so far been unsuccessful in this. My main problem is updating the cropped-image display widget. Currently it shows nothing (the signals and slots are working by the way).

Here is the code

Qt Code: 
  1. MyWidgetOne::MyWidgetOne(QWidget* parent): QWidget(parent)
  2. {
  3.   int x, y;
  4.  
  5.   coordOne = new QPoint;
  6.  
  7.   drawLabel = new QLabel;
  8.   QPixmap dl;
  9.   dl.load("resources/image_ori.bmp");
  10.   dl = dl.copy(x-25, y-25, 50, 50);
  11.   dl.save("resources/image.bmp");
  12.   drawLabel->setPixmap(dl);
  13.  
  14.  
  15.   QVBoxLayout* mainLayout = new QVBoxLayout;
  16.   mainLayout->addWidget(drawLabel);
  17.  
  18.   setLayout(mainLayout);
  19.   setWindowTitle(tr("Receiver"));
  20. }
  21.  
  22. void MyWidgetOne::showCoords(QPoint xy)
  23. {
  24. 	int i, j;
  25. 	coordOne = &xy;
  26. 	i = (coordOne->x());
  27. 	j = coordOne->y();
  28. 	x = i;
  29. 	y = j;
  30. 	update();
  31. 	//repaint();
  32. }
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So as you can see I use x and y to define the corner of the area to be displayed (with a 50 height and width). When I receive the QPoint, I update this values via i and j).

I thought putting update() or repaint() would work but they have so far been of no use. Any help would be appreciated.