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Diffstat (limited to 'src/gui/painting/qplatformbackingstore_qpa.cpp')
-rw-r--r-- | src/gui/painting/qplatformbackingstore_qpa.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/gui/painting/qplatformbackingstore_qpa.cpp b/src/gui/painting/qplatformbackingstore_qpa.cpp index 485190d301..ff7d91ccea 100644 --- a/src/gui/painting/qplatformbackingstore_qpa.cpp +++ b/src/gui/painting/qplatformbackingstore_qpa.cpp @@ -114,6 +114,9 @@ QWindow* QPlatformBackingStore::window() const This function is called before painting onto the surface begins, with the \a region in which the painting will occur. + \note A platform providing a backing store with an alpha channel + needs to properly initialize the region to be painted. + \sa endPaint(), paintDevice() */ |