The tDrawFace is a smart drawing canvas and provides the folloving:
+ Panning (dragging of middle-button)
+ Some zooming function (wheel - dinamic zoom, zoomrect and zoomall function)
+ Objects defined regions handling (at the mouse cursor)
+ Popup menu inspector (on the right click)
+ Grip handling (the selected object has grips, these allow modify size of object)
+ Undo/Redo (some times:)
+ Object tree view (with hierarchical editing)
+ Print preview/Print
+ Save/Open (saving the work to a XML file...)
+ Source codes for some basic drawing objects (rectangle, ellipse, polyline, text, picture)
+ Property painting
+ Link object (a block system)
* Object snaping (some times:)
