TODO:
* HTML support in the TextEdit control.
* The Settings properties of some controls.
* The MovieBox source code was not reviewed.
* The Control.Design property.
* Finish solving underline and strikethrough problem.
* Review the Stock class.
* Review the Slider class.
* TextEdit text size does not work.
* TextArea undo and redo are not implemented.
* GridView.Rows[].Height = -1 / GridView.Columns[].Width = -1
* Printing support with Cairo.
* Events ignored during a WAIT.
DONE:
* gMainWindow must not lose its X11 properties.
* Drag.Formats
* Sorting in TreeView, ListView and ColumnView.
* The "_DefaultSize" hidden properties used by the IDE when you drag a control
from the toolbox and drop it on a form.
* The MouseDrag event.
* The Image.Data and Image.Transparent properties.
* The Menu.Hide() and Menu.Show() methods.
* Mouse.Horizontal and Mouse.Vertical.
* Mouse.StartX and Mouse.StartY.
* The ProgressBar, Separator, and Slider control source code was not reviewed.
* The Image.Draw() method.
* Manage a bitmap mask with GdkPixmap
* The Align constant must be the same as in gb.qt, otherwise the IDE cannot use them correctly.
* The old Drag & Drop code was not reviewed and may not work.
* Drag.Icon does not work.
* Drag.Show() and Drag.Hide().
* Menu crash in database manager.
* Some GridView properties.
* Timers are not yet accurate. See Snake example.
* Bug in arrangement with the AutoResize property of Containers.
* The specific DrawingArea.Enabled behaviour.
* The transformation matrix (except rotation).
* Creates gb.gtk.ext
* Label.Adjust & TextLabel.Adjust
* GridView last column auto stretching.
* GridView scrolling timer.
* TrayIcon missing events.
* Input methods are now managed by the KeyPress event.
DONE LATER:
* The Drawing class. This feature does not exist in GTK+, so it may be removed
from gb.qt, and/or will be replaced by some SVG support in a future release.
* The Printer class. This feature does not exist in GTK+, so it may be removed
from gb.qt and put in a specific component. It is actually a PS generator.