我有一个QWidgetAction,它包含一个由QLineEdit和QPushButton组成的QWidget。一旦用户按下按钮,QWidgetAction就会调用触发器插槽。
现在我有一个用exec激活的QMenu。问题是,即使调用了触发器(我已将其连接到打印功能以进行检查),菜单也不会关闭。
常规QActions运作良好。
知道为什么吗?
答案 0 :(得分:0)
多年的问题,但我仍然有一个答案,希望它对任何人都有帮助!
我将描述我的完整解决方案,该解决方案不仅可以隐藏菜单,还可以管理视觉表示。
QWidgetAction子类:MyClass.h
Release
QWidgetAction子类MyClass.cpp
class MyClass : public QWidgetAction {
Q_OBJECT
public:
MyClass(QObject* parent);
bool eventFilter(QObject*, QEvent*) override;
signals:
void mouseInside();
void mouseOutside();
protected:
QWidget* createWidget(QWidget* parent) override;
private:
QWidget* w;
QWidget* border;
QFormLayout *form;
QHBoxLayout *mainLayout;
}
最后将QWidgetAction插入菜单中,在代码中添加以下内容:
QWidget* MyClass::createWidget(QWidget* parent) {
w = new QWidget(parent);
border = new QWidget(parent);
mainLayout = new QHBoxLayout(w);
layout = new QFormLayout();
border->setSizePolicy(QSizePolicy(QSizePolicy::Fixed, QSizePolicy::Maximum));
border->setMaximumWidth(10);
border->setMinimumWidth(10);
border->setMaximumHeight(1000); //Anything will do but it needs a height
mainLayout->setContentsMargins(0, 0, 0, 0);
mainLayout->setSpacing(0);
w->setLayout(mainLayout);
mainLayout->addWidget(border);
mainLayout->addLayout(layout);
layout->setContentsMargins(6, 11, 11, 11);
layout->setSpacing(6);
// Insert your widgets here, I used a QFormLayout
QLineEdit *l = new QLineEdit(w);
form->addRow("Test", l);
// I added a button to accept input
QPushButton* b = new QPushButton("Send", w);
connect(b, SIGNAL(clicked()), this, SLOT(trigger()));
layout->addWidget(b);
w->installEventFilter(this); // This is to avoid non button clicks to close the menu
return w;
}
bool MyClass::eventFilter(QObject*, QEvent* ev) {
if (ev->type() == QEvent::MouseButtonPress
|| ev->type() == QEvent::MouseButtonDblClick
|| ev->type() == QEvent::MouseButtonRelease) {
return true;
} else if (ev->type() == QEvent::Enter) {
border->setStyleSheet("background-color: #90c8f6;");
emit mouseInside();
} else if (ev->type() == QEvent::Leave) {
border->setStyleSheet("");
emit mouseOutside();
}
return false;
}