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set opacity properly

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markt 2007-01-06 19:59:46 +00:00
parent 94e2c89053
commit 4628ff7694
1 changed files with 1 additions and 1 deletions
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2
src/FbTk/FbWindow.cc
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@ -553,7 +553,7 @@ long FbWindow::eventMask() const {
void FbWindow::setOpaque(unsigned char alpha) {
#ifdef HAVE_XRENDER
static Atom m_alphaatom = XInternAtom(display(), "_NET_WM_WINDOW_OPACITY", False);
unsigned int opacity = alpha << 24;
unsigned int opacity = alpha * 0x1010101;
changeProperty(m_alphaatom, XA_CARDINAL, 32, PropModeReplace, (unsigned char *) &opacity, 1l);
#endif // HAVE_XRENDER
}