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| author | Lars Knoll <lars.knoll@nokia.com> | 2009-03-23 09:18:55 (GMT) |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@nokia.com> | 2009-03-23 09:18:55 (GMT) |
| commit | e5fcad302d86d316390c6b0f62759a067313e8a9 (patch) | |
| tree | c2afbf6f1066b6ce261f14341cf6d310e5595bc1 /doc/src/snippets/code/src_gui_painting_qregion.cpp | |
| download | Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.zip Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.gz Qt-e5fcad302d86d316390c6b0f62759a067313e8a9.tar.bz2 | |
Long live Qt 4.5!
Diffstat (limited to 'doc/src/snippets/code/src_gui_painting_qregion.cpp')
| -rw-r--r-- | doc/src/snippets/code/src_gui_painting_qregion.cpp | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/src/snippets/code/src_gui_painting_qregion.cpp b/doc/src/snippets/code/src_gui_painting_qregion.cpp new file mode 100644 index 0000000..6c5dfa5 --- /dev/null +++ b/doc/src/snippets/code/src_gui_painting_qregion.cpp @@ -0,0 +1,13 @@ +//! [0] +void MyWidget::paintEvent(QPaintEvent *) +{ + QRegion r1(QRect(100, 100, 200, 80), // r1: elliptic region + QRegion::Ellipse); + QRegion r2(QRect(100, 120, 90, 30)); // r2: rectangular region + QRegion r3 = r1.intersected(r2); // r3: intersection + + QPainter painter(this); + painter.setClipRegion(r3); + ... // paint clipped graphics +} +//! [0] |