我现在用designer建了一个名字叫selfdesignwindow的窗口，里头我分别画了两个frame‘emptyboard’和‘chessbox’，frame里头有画了个label，然后我想在两个frame中都实现拖拽功能拖动里头的label（像例子中的draggableicons那样）。
但是我不明白该如何把ui文件和代码串联起来用了，例子中的界面都是纯代码实现的。。。
先是我的窗口显示：
//selfdesignwindow.h：
#include<QDialog>
#include"ui_selfdesign.h"
class Selfdesignwindow:public QDialog,public Ui::Dialog
{
Q_OBJECT
public:
Selfdesignwindow(QWidget *parent=0);
private slots:
void on_backbutton_clicked();
};
//selfdesignwindow.cpp:
Selfdesignwindow::Selfdesignwindow(QWidget *parent)
:QDialog(parent)
{
setupUi(this);
}
为了实现拖拽而另外封装的类chesswigget：
//chesswidget.h:
#include<QList>
#include<QPoint>
#include<QPixmap>
#include<QWidget>
#include"ui_selfdesign.h"
#include<QFrame>
class QDragEnterEvent;
class QDropEvent;
class QMoseEvent;
class ChessWidget:public QFrame
{
Q_OBJECT
public:
ChessWidget(QWidget *parent=0);
protected:
void dragEnterEvent(QDragEnterEvent *event);
void dropEvent(QDropEvent *event);
void mousePressEvent(QMouseEvent *event);
};
//chesswidget.cpp:
#include<QtGui>
#include"chesswidget.h"
ChessWidget::ChessWidget(QWidget *parent)
:QFrame(parent)
{
setAcceptDrops(true);
}
void ChessWidget::dragEnterEvent(QDragEnterEvent *event)
{
if (event->source() == this) {
event->setDropAction(Qt::MoveAction);
event->accept();
}
}
void ChessWidget::dropEvent(QDropEvent *event){
QByteArray itemData = event->mimeData()->data("application/x-dnditemdata");
QDataStream dataStream(&itemData, QIODevice::ReadOnly);
QPixmap pixmap;
QPoint offset;
dataStream >> pixmap >> offset;
QLabel *newIcon = new QLabel(this);
newIcon->setPixmap(pixmap);
newIcon->move(event->pos() - offset);
newIcon->show();
newIcon->setAttribute(Qt::WA_DeleteOnClose);
}
void ChessWidget::mousePressEvent(QMouseEvent *event){
QLabel *child = static_cast<QLabel*>(childAt(event->pos()));
if (!child)
return;
QPixmap pixmap = *child->pixmap();
QByteArray itemData;
QDataStream dataStream(&itemData, QIODevice::WriteOnly);
dataStream << pixmap << QPoint(event->pos() - child->pos());
QMimeData *mimeData = new QMimeData;
mimeData->setData("application/x-dnditemdata", itemData);
QDrag *drag = new QDrag(this);
drag->setMimeData(mimeData);
drag->setPixmap(pixmap);
drag->setHotSpot(event->pos() - child->pos());
QPixmap tempPixmap = pixmap;
QPainter painter;
painter.begin(&tempPixmap);
painter.fillRect(pixmap.rect(), QColor(127, 127, 127, 127));
painter.end();
child->setPixmap(tempPixmap);
if (drag->exec(Qt::CopyAction | Qt::MoveAction, Qt::CopyAction) == Qt::MoveAction)
{ child->close();
}
else {
child->show();
child->setPixmap(pixmap);
}
}
拖拽代码基本上都是抄例子draggableicons的，但是这个例子的界面没有用designer，所以我就不知道该如何将这些拖拽函数附到主窗口中的frame上，请各位帮忙，谢谢！！
