func (cw CustomWidget) Create(builder *Builder) error {
w, err := walk.NewCustomWidget(builder.Parent(), uint(cw.Style), cw.Paint)
if err != nil {
return err
}
return builder.InitWidget(cw, w, func() error {
w.SetClearsBackground(cw.ClearsBackground)
w.SetInvalidatesOnResize(cw.InvalidatesOnResize)
if cw.AssignTo != nil {
*cw.AssignTo = w
}
return nil
})
}
func (cw CustomWidget) Create(builder *Builder) error {
w, err := walk.NewCustomWidget(builder.Parent(), uint(cw.Style), cw.Paint)
if err != nil {
return err
}
return builder.InitWidget(cw, w, func() error {
if cw.PaintMode != PaintNormal && cw.ClearsBackground {
panic("PaintMode and ClearsBackground are incompatible")
}
w.SetClearsBackground(cw.ClearsBackground)
w.SetInvalidatesOnResize(cw.InvalidatesOnResize)
w.SetPaintMode(walk.PaintMode(cw.PaintMode))
if cw.AssignTo != nil {
*cw.AssignTo = w
}
return nil
})
}
func main() {
walk.SetPanicOnError(true)
mainWnd, _ := walk.NewMainWindow()
mw := &MainWindow{MainWindow: mainWnd}
mw.SetTitle("Walk Drawing Example")
mw.SetLayout(walk.NewVBoxLayout())
mw.paintWidget, _ = walk.NewCustomWidget(mw, 0, func(canvas *walk.Canvas, updateBounds walk.Rectangle) error {
return mw.drawStuff(canvas, updateBounds)
})
mw.paintWidget.SetClearsBackground(true)
mw.paintWidget.SetInvalidatesOnResize(true)
mw.SetMinMaxSize(walk.Size{320, 240}, walk.Size{})
mw.SetSize(walk.Size{800, 600})
mw.Show()
mw.Run()
}