Question

我的用户界面遇到了一些问题。我试图让它可以移动，但我不断得到随机错误。以下是错误的屏幕截图：http://prntscr.com/79esqu

DraggableWindow.cpp代码：

#include "DraggableWindow.h"

#include <QWidget>
#include <QMainWindow>
#include <QPoint>
#include <QMouseEvent>
#include <Qt>

DraggableWindow::DraggableWindow(QWidget *parent)
: QMainWindow(parent)
, m_captured(false)
, m_last_event_pos(QPoint(0, 0))
{
}

void DraggableWindow::mousePressEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        m_last_event_pos = event->pos();
        m_captured = true;
    }
}

void DraggableWindow::mouseMoveEvent(QMouseEvent *event)
{
    if(m_captured)
    {
        this->move(this->pos() + (event->pos()-m_last_event_pos));
    }
}

void DraggableWindow::mouseReleaseEvent(QMouseEvent *event)
{
    if(event->button() == Qt::LeftButton)
    {
        m_captured = false;
    }
}

DraggableWindow.h代码：

#pragma once

#include <QMainWindow>
#include <QWidget>
#include <QMouseEvent>
#include <QPoint>

class DraggableWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit DraggableWindow(QWidget *parent = 0);

protected:
    void mousePressEvent(QMouseEvent *event);
    void mouseMoveEvent(QMouseEvent *event);
    void mouseReleaseEvent(QMouseEvent *event);

private:
    bool m_captured;
    QPoint m_last_event_pos;
};

mainlauncher.cpp的启动脚本：

MainLauncher::MainLauncher(QWidget *parent)
: DraggableWindow(parent)
, ui(Ui::MainLauncher)
{
    ui->setupUi(this);
}

我遇到了问题。请帮忙！

Answer 1

你得到的是链接器错误。好像您的DraggableWindow.cpp尚未编译。

确保您已将。{1}}包含在.pro文件的DraggableWindow.cpp部分中，SOURCES部分包含在DraggableWindow.h部分。

如果在.pro文件中正确添加它们，则在添加qmake后可能没有运行。尝试HEADERS，然后Build->Run Qmake

可移动的UI错误Qt5

1 个答案: