qt - Canvas image not grabbed in QQuickWindow -

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i need capture image qml has canvas elements. whereas canvases displayed fine not correctly saved in picture snapshots.

i have used qquickwindow grabwindow method described in solutions of this link , images saved in ui thread called afterrendering signal (i have tried frameswapped signal too). result qml objects saved not canvas objects.

both renderstrategy , rendertargetof canvases set default values. simple canvases shown below:

canvas {     id:canvas      onpaint:{         var ctx = canvas.getcontext('2d');         ctx.beginpath();         ctx.moveto(20, 0);         ctx.beziercurveto(-10, 90, 210, 90, 180, 0);         ctx.stroke();         //...     } }

i have noticed afterrendering signal called multiple times.

any suggestion appreciated! :)


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