A wPaintDC object must be constructed if an application wishes to paint on the client area of a window from within a wEvent_Paint event handler. To draw on a window from outside your wEvent_Paint event handler, construct a wClientDC object. To draw on the whole window including decorations, construct a wWindowDC object. A wPaintDC object is initialized to use the same font and colors as the window it is associated with.
Like other DC object, wPaintDC need nim's destructors to release the resource.
| Superclass: | wDC |
|---|
Procs
proc PaintDC(canvas: wWindow): wPaintDC {...}{.raises: [wNilAccess, IndexDefect, wFontError, wPenError, wBrushError], tags: [RootEffect].}
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Constructor. In wEvent_Paint event handler the wWindow object usually is event.window. For example:
frame.connect(wEvent_Paint) do (event: wEvent): var dc = PaintDC(event.window)
proc getPaintRect(self: wPaintDC): wRect {...}{.raises: [], tags: [].}
- Gets the rectangle in which the painting is requested.
proc delete(self: var wPaintDC) {...}{.raises: [], tags: [].}
- Nim's destructors will delete this object by default. However, sometimes you maybe want to do that by yourself. (Nim's destructors don't work in some version?)