今天发现在mac上弹出窗口级模态对话框，设置了translucentBackgound属性后居然没有完全透明，还是能够看到边框，如下图：
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实例程序中，点击主界面的按钮，会弹出一个子对话框。按钮点击对应的slot是：
void Dialog::onBtnclicked()
{
QDialog* pModalDlg = new QDialog(this);
pModalDlg->setWindowModality(Qt::WindowModal); pModalDlg->setFixedSize(320,240);
QPushButton *pModalBtn = new QPushButton("OK",pModalDlg);
connect(pModalBtn,SIGNAL(clicked()),pModalDlg,SLOT(close()));
//pModalDlg->setStyleSheet("");
pModalDlg->setWindowFlags(Qt::Dialog | Qt::FramelessWindowHint | Qt::CustomizeWindowHint);
pModalDlg->setAttribute(Qt::WA_NoSystemBackground); pModalDlg->show();
}
