gtkmm - drawing primitives (and text) on window with keeping an old content

Asked Jun 23 '13 at 18:33

Active Jun 23 '13 at 18:33

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I want to draw some primitives (for example lines or text) on given window with gtkmm (gdkmm / gdk) with keeping old content of this window. I guess that using DrawingArea widget may be no helpful because I need draw on the old pixbuf. Maybe I need to rearrange this pixbuf and load it again to this window? Is it possible? Maybe I need to instert something between begin_paint_region() and end_paint()?

thanks.

asked Jun 23 '13 at 18:33

kelsar

1

Why not use cairo? It's really easy to do what you want. – LiuLang Jun 24 '13 at 07:43
Is the widget that currently shows the pixbuf under your control? – user4815162342 Jun 24 '13 at 08:41
I'm very beginner in cairo @LiuLang, what should I do exactly? – kelsar Jun 24 '13 at 13:08
@kelsar, here is a simple tutorial about cairo. http://zetcode.com/gfx/cairo/ – LiuLang Jun 25 '13 at 04:00

gtkmm - drawing primitives (and text) on window with keeping an old content

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