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62 lines
1.3 KiB
Go
62 lines
1.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"github.com/mappu/miqt/qt"
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)
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func main() {
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qt.NewQApplication(os.Args)
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qt.QGuiApplication_SetApplicationDisplayName("Right-click to change color")
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w := qt.NewQGroupBox2() // qt.NewQw2()
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w.SetTitle("QGroupBox title")
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w.SetFixedWidth(320)
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w.SetFixedHeight(240)
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w.SetMinimumHeight(100)
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w.SetMinimumWidth(100)
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useColors := []qt.GlobalColor{
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qt.Black, qt.Red, qt.Green, qt.Blue,
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}
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currentColor := 0
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w.OnPaintEvent(func(super func(ev *qt.QPaintEvent), ev *qt.QPaintEvent) {
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// Call the base class's PaintEvent to get initial content
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// (Comment this out to see the QGroupBox disappear)
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super(ev)
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// Then, draw on top of it
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ptr := qt.NewQPainter2(w.QPaintDevice)
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defer ptr.Delete()
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br := qt.NewQBrush12(useColors[currentColor], qt.SolidPattern)
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defer br.Delete()
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ptr.SetBrush(br)
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ptr.DrawRect2(80, 60, 160, 120)
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ptr.End()
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})
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w.OnContextMenuEvent(func(super func(ev *qt.QContextMenuEvent), ev *qt.QContextMenuEvent) {
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super(ev)
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currentColor = (currentColor + 1) % len(useColors)
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w.Update() // repaints in next event loop tick
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})
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w.OnKeyPressEvent(func(super func(ev *qt.QKeyEvent), ev *qt.QKeyEvent) {
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super(ev)
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w.SetTitle(fmt.Sprintf("Keypress %d", ev.Key()))
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})
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w.Show()
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qt.QApplication_Exec()
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}
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