44 lines
1.1 KiB
Text
44 lines
1.1 KiB
Text
load "guilib.ring"
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new qapp
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{
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win1 = new qwidget() {
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setwindowtitle("drawing using qpainter")
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setgeometry(100,100,500,500)
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label1 = new qlabel(win1) {
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setgeometry(10,10,400,400)
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settext("")
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}
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new qpushbutton(win1) {
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setgeometry(200,400,100,30)
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settext("draw")
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setclickevent("draw()")
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}
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show()
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}
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exec()
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}
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func draw
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p1 = new qpicture()
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color = new qcolor() {
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setrgb(0,0,255,255)
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}
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pen = new qpen() {
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setcolor(color)
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setwidth(1)
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}
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new qpainter() {
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begin(p1)
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setpen(pen)
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for i = 1 to 1000
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x = random(31)-16
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y = random(31)-16
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r = sqrt (pow(x,2) + pow(y,2))
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if r >= 10 if r <= 15 drawpoint(x*2, y*2) ok ok
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next
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endpaint()
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}
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label1 { setpicture(p1) show() }
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