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Let userland retain the window backing store while drawing into it.
To start painting, call: gui$get_window_backing_store() Then finish up with: gui$release_window_backing_store() Process will retain the underlying GraphicsBitmap behind the scenes. This fixes racing between the WindowServer and GUI clients. This patch also adds a WSWindowLocker that is exactly what it sounds like.
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22 changed files with 244 additions and 102 deletions
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@ -30,6 +30,7 @@ int main(int argc, char** argv)
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return 1;
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}
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// NOTE: We never release the backing store. This is just a simple app. :^)
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GUI_WindowBackingStoreInfo backing;
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int rc = gui_get_window_backing_store(window_id, &backing);
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if (rc < 0) {
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