I'm trying to write PyQt code equivalent to the following C++ code, but I'm stuck. I'm relatively new to Python, and I'm having a hard time following the PyQt documentation for QImage.
I can create the GUI parts, but how do I set up the raw data and call the QImage constructor?

Qt Code: 
  1. int main(int argc, char* argv[])
  2. {
  3. 	// Create the Qt application and GUI components
  4. 	QApplication app(argc, argv);
  7. 	QGraphicsView view(&canvas, &win);
  8.  
  9. 	unsigned char* imageData = new unsigned char[324];
  10.  
  11. 	// Generate some image data
  12. 	for(int i = 0; i < 324; i++)
  13. 	{
  14. 		imageData[i] = i % 250;
  15. 	}
  16.  
  17. 	// Create the colormap for the indexed image
  18. 	QVector<QRgb> colormap;
  19. 	for(int i = 0; i < 255; i++)
  20. 	{
  21. 		colormap.append(qRgb(i, i, i));
  22. 	}
  23.  
  24. 	QImage img(imageData, 18, 18, QImage::Format_Indexed8);	// Create the image
  25. 	img.setColorTable(colormap); // Set up the colormap 
  26. 	QPixmap pix = QPixmap::fromImage(img); // Convert it to a pixmap so we can display it
  27. 	canvas.addPixmap(pix); // Add the pixmap to the graphics canvas
  28.  
  29. 	win.show();
  30. 	app.exec();
  31. }
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Here's the Python code I've got so far:
Qt Code: 
  1. from PyQt4.QtGui import *
  2. from os import sys
  3.  
  4. app = QApplication(sys.argv)
  5.  
  6. # Create the window and the graphics view
  7. win = QMainWindow()
  8. canvas = QGraphicsScene()
  9. view = QGraphicsView(canvas, win)
  10. view.resize(200, 200)
  11.  
  12. # Create the image data - How?
  13. # Create the QImage - How?
  14.  
  15. # Create the colormap
  16.  
  17. pixmap = QPixmap.fromImage(img)
  18.  
  19. # Add the image to the canvas
  20. canvas.addPixmap(pixmap)
  21.  
  22. win.show()
  23. sys.exit(app.exec_())
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