QMainWindow不响应mouseReleaseEvent事件解决方案 - QT开发当前位置:& &&&QMainWindow不响应mouseReleaseEvent事件解决方案QMainWindow不响应mouseReleaseEvent事件解决方案&&网友分享于：&&浏览：7次QMainWindow不响应mouseReleaseEvent事件建的一个QMainWindow只能响应mousePressEvent事件，却不能够响应mouseReleaseEvent事件和mouseMoveEvent事件，请问这是怎么回事？------解决方案--------------------QMainWindow只能响应mousePressEvent事件，却不能够响应mouseReleaseEvent事件？
这个是不可能的。
mouseMoveEvent是需要将左键按下移动鼠标才有的。------解决方案--------------------QWidget
mouseTracking&:&bool
This&property&holds&whether&mouse&tracking&is&enabled&for&the&widget.
If&mouse&tracking&is&disabled&(the&default),&the&widget&only&receives&mouse&move&events&when&at&least&one&mouse&button&is&pressed&while&the&mouse&is&being&moved.
If&mouse&tracking&is&enabled,&the&widget&receives&mouse&move&events&even&if&no&buttons&are&pressed.
Access&functions:
bool hasMouseTracking&()&const
void setMouseTracking&(&bool&enable&)
See&also&mouseMoveEvent().------解决方案--------------------3楼正解。
楼主最好把代码贴出来，分析下。
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12345678910 上一篇：下一篇：文章评论相关解决方案 12345678910 Copyright & &&版权所有QTreeWidget中怎么触发判断鼠标左键的点击事件_百度知道
QTreeWidget中怎么触发判断鼠标左键的点击事件
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在ui上添加两个控件，分别为lable和pushButton。
在mainwindow.h中添加两个事件：mouseMoveEvent &和 &keyPressEvent
实现的功能为：按下键盘z键，显示一张图片
& & & & & & & & & & & & & & 按下pushbutton，显示坐标，并将光标自定义一个图标
代码如下：
//mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include &QtWidgets/QMainWindow&
#include &ui_mainwindow.h&
#include &QMouseEvent&
class MainWindow : public QMainWindow
MainWindow(QWidget *parent = 0);
~MainWindow();
void mouseMoveEvent(QMouseEvent *);
void keyPressEvent(QKeyEvent *);
Ui::MainWindowC
#endif // MAINWINDOW_H
//mianwindow.cpp
#include &mainwindow.h&
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
ui.setupUi(this);
ui.label-&setText(tr(&push the key: z&));
ui.pushButton-&setText(tr(&try to press the mouse and to move &));
MainWindow::~MainWindow()
void MainWindow::mouseMoveEvent(QMouseEvent *e)
QCursor my(QPixmap(&C:/Users/sony/Desktop/practice/1/Win32/Debug/bubble.png&));
QApplication::setOverrideCursor(my);
int x = e-&pos().x();
int y = e-&pos().y();
ui.pushButton-&setText(tr(&mouse:(%1,%2)&).arg(x).arg(y));
ui.pushButton-&move(e-&pos());
void MainWindow::keyPressEvent(QKeyEvent *e)
if(e-&key() == Qt::Key_Z)
ui.label-&setPixmap(QPixmap(&C:/Users/sony/Desktop/pic/Lena.jpg&));
ui.label-&resize(100, 100);
//main.cpp
#include &mainwindow.h&
#include &QtWidgets/QApplication&
int main(int argc, char *argv[])
QApplication a(argc, argv);
return a.exec();
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(3)(3)(3)(2)(10)(4)(1)(8)(29)(17)(6)(16)(13)(13)(42)(14)(5)(12)(1)QMainWindow不响应mouseReleaseEvent事件,该怎么解决 - QT开发&&&&>>&& QMainWindow不响应mouseReleaseEvent事件建的一个QMainWindow只能响应mousePressEvent事件，却不能够响应mouseReleaseEvent事件和mouseMoveEvent事件，请问这是怎么回事？------解决方案--------------------QMainWindow只能响应mousePressEvent事件，却不能够响应mouseReleaseEvent事件？这个是不可能的。mouseMoveEvent是需要将左键按下移动鼠标才有的。
------解决方案--------------------QWidgetmouseTracking : boolThis property holds whether mouse tracking is enabled for the widget.If mouse tracking is disabled (the default), the widget only receives mouse move events when at least one mouse button is pressed while the mouse is being moved.If mouse tracking is enabled, the widget receives mouse move events even if no buttons are pressed.Access functions:bool hasMouseTracking () constvoid setMouseTracking ( bool enable )See also mouseMoveEvent().
------解决方案--------------------3楼正解。楼主最好把代码贴出来，分析下。Qt复习重点_百度文库
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