CQGUI框架之陰影圓角窗口實現

大家好，我是IT文藝男，來自一線大廠的一線程序員

今天給大家講解基於C++/Qt的CQGUI框架的陰影圓角窗口實現，實現效果如下圖所示：：

CQGUI開發環境：：

• Microsoft Visual Studio 2019
• Qt5.15.1

步驟如下：：

一、繼承關系

class LoginPanel : public QDialog

二、窗口屬性

setAttribute(Qt::WA_TranslucentBackground); //設置頂層面板背景透明
setWindowFlags(Qt::FramelessWindowHint);  //設置無邊框
setContentsMargins(10, 10, 10, 10);

Qt::WA_TranslucentBackground Indicates that the widget should have a translucent background, i.e., any non-opaque regions of the widgets will be translucent because the widget will have an alpha channel. Setting this flag causes WA_NoSystemBackground to be set. On Windows the widget also needs the Qt::FramelessWindowHint window flag to be set. This flag is set or cleared by the widget's author.

三、設置陰影效果

auto *defaultShadow = new QGraphicsDropShadowEffect();
defaultShadow->setBlurRadius(10.0);
defaultShadow->setColor(QColor(0, 0, 0, 160));
defaultShadow->setOffset(0, 0);
_loginMainFrm->setGraphicsEffect(defaultShadow);

四、設置樣式

QFrame#loginMainFrm>QFrame#leftFrame{
	background:rgba(255,255,255,0.9);
	border-top-left-radius:6px;
    border-top-right-radius:0px;
    border-bottom-right-radius:0px;
    border-bottom-left-radius:6px;
}

五、事件響應

protected:
    void mousePressEvent(QMouseEvent *e) override ;
    void mouseReleaseEvent(QMouseEvent *e) override ;
    void mouseMoveEvent(QMouseEvent *e) override ;
    void closeEvent(QCloseEvent *e) override ;
    bool event(QEvent* e) override ;
protected:
    bool eventFilter(QObject* o, QEvent* e) override;

今天就講解到這里，按步驟進行梳理，過程很清晰; 更詳細的代碼分析與講解，請關注微信公眾號(itwenyinan)，觀看對應的的視頻版講解；謝謝