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dsimcha
Joined: 24 Oct 2008
Posts: 16
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 Posted: Fri Jul 16, 2010 10:55 pm Post subject: Example code for DrawingArea |
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I'm trying to use DrawingArea to create custom drawings on a Window. I've read over the docs and the following code seems reasonable to create a minimal drawing with a single line. When I run it, I get a blank window. Can someone please tell me what's wrong with it and post the minimal code for creating a visible drawing on a main window?
| Code: |
import gtk.DrawingArea, gtk.Main, gtk.MainWindow, gdk.GC, gdk.Drawable,
gdk.Color;
void main(string[] args) {
Main.init(args);
auto win = new MainWindow("Hello, world");
win.setDefaultSize(800, 600);
auto drawingArea = new DrawingArea(800, 600);
win.add(drawingArea);
drawingArea.realize();
auto drawable = drawingArea.getWindow();
auto gc = new GC(drawable);
gc.setForeground(new Color(255, 0, 0));
gc.setBackground(new Color(255, 255, 255));
drawable.drawLine(gc, 0, 0, 100, 100);
drawingArea.showAll();
drawingArea.queueDraw();
win.showAll();
Main.run();
}
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jpf2
Joined: 15 Aug 2009
Posts: 7
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| Posted: Sat Jul 17, 2010 1:24 am Post subject: |
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Just reposting Jeromes example from the newsgroup
| Code: |
import gtk.DrawingArea, gtk.Main, gtk.MainWindow, gdk.GC,
gdk.Drawable, gtk.Widget, gdk.Color;
void main(string[] args) {
Main.init(args);
auto win = new MainWindow("Hello, world");
win.setDefaultSize(800, 600);
auto drawingArea = new DrawingArea(800, 600);
win.add(drawingArea);
drawingArea.realize();
drawingArea.addOnExpose ((GdkEventExpose* event,
Widget drawingArea) {
auto drawable = drawingArea.getWindow();
auto gc = new GC(drawable);
gc.setForeground(new Color(255, 0, 0));
gc.setBackground(new Color(255, 255, 255));
drawable.drawLine(gc, 0, 0, 100, 100);
return true;
});
drawingArea.showAll();
drawingArea.queueDraw();
win.showAll();
Main.run();
}
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