diff options
| author | Jonathan Liu <net147@gmail.com> | 2012-12-31 18:31:19 +1100 |
|---|---|---|
| committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-01-04 13:20:06 +0100 |
| commit | d75b21790162694ce5f595ddf330af06df09644b (patch) | |
| tree | 45eef341b6a25bd2c02e6d2e3dddb9c9273bac3c /src | |
| parent | 4250fa2cf607a21dedc0588497498f82e77fb390 (diff) | |
Windows: Add fallback for UpdateLayeredWindowIndirect
The UpdateLayeredWindowIndirect function is only available on Windows
Vista and later. If UpdateLayeredWindowIndirect is not available
(e.g. on Windows XP), use UpdateLayeredWindow instead.
Change-Id: I8af23c051560f7e54eda390dae7553543c00a94b
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowsbackingstore.cpp | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp index 04fe558541..b7937b4d84 100644 --- a/src/plugins/platforms/windows/qwindowsbackingstore.cpp +++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp @@ -100,10 +100,15 @@ void QWindowsBackingStore::flush(QWindow *window, const QRegion ®ion, POINT ptDst = {r.x(), r.y()}; POINT ptSrc = {0, 0}; BLENDFUNCTION blend = {AC_SRC_OVER, 0, (BYTE)(255.0 * rw->opacity()), AC_SRC_ALPHA}; - RECT dirty = {dirtyRect.x(), dirtyRect.y(), - dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()}; - UPDATELAYEREDWINDOWINFO info = {sizeof(info), NULL, &ptDst, &size, m_image->hdc(), &ptSrc, 0, &blend, ULW_ALPHA, &dirty}; - QWindowsContext::user32dll.updateLayeredWindowIndirect(rw->handle(), &info); + + if (QWindowsContext::user32dll.updateLayeredWindowIndirect) { + RECT dirty = {dirtyRect.x(), dirtyRect.y(), + dirtyRect.x() + dirtyRect.width(), dirtyRect.y() + dirtyRect.height()}; + UPDATELAYEREDWINDOWINFO info = {sizeof(info), NULL, &ptDst, &size, m_image->hdc(), &ptSrc, 0, &blend, ULW_ALPHA, &dirty}; + QWindowsContext::user32dll.updateLayeredWindowIndirect(rw->handle(), &info); + } else { + QWindowsContext::user32dll.updateLayeredWindow(rw->handle(), NULL, &ptDst, &size, m_image->hdc(), &ptSrc, 0, &blend, ULW_ALPHA); + } } else { #endif const HDC dc = rw->getDC(); |