推荐回答(2个)
void QWidget::setMask ( const QBitmap & bitmap )
Causes only the pixels of the widget for which bitmap has a corresponding 1 bit to be visible. If the region includes pixels outside the rect() of the widget, window system controls in that area may or may not be visible, depending on the platform.
只有在bitmap中像素数据是1的地方才会显示出widget的相应像素来. Bitmap就是像素数据只有两个值: 0和1 (1 bit-depth, monochrome).
QLabel topLevelLabel;
QPixmap pixmap(":/images/tux.png");
topLevelLabel.setPixmap(pixmap);
topLevelLabel.setMask(pixmap.mask()); // 可以不使用转换的, 使用一张专门的bitmap图片.上面的这些方式用一普通的QWidget就可以了. 当然, 对于窗口而言, 很多时候我们要把它的标题栏去掉:widget->setWindowFlags(Qt::FramelessWindowHint);但是对于不规则的QPushButton就有些特殊, 要使用QIcon来处理:button->setIcon(QIcon("xxx.png"));button->setIconSize(w, h);button->setMask(maskBitmap/*maskedRegion*/);button->setFixedSize(w, h); // 这个当然最好使用它的icon的大小.
innodb_data_home_dir = /longxibendi/mysql/mysql/var/
#innodb_data_file_path = ibdata1:1G:autoextend
innodb_data_file_path = ibdata1:500M;ibdata2:2210M:autoextend #表空间
innodb_file_io_threads = 4 #io线程数
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