QTextEdit 不工作

Question

为什么在这个 QTextEdit 上拖放图片不起作用？我已经尝试了一切。

这是 TextEdit 类：

 //textedit
class TextEdit : public QTextEdit
 {
Q_OBJECT
public:




TextEdit(QWidget*parent) : QTextEdit(parent)
{
    this->setAcceptDrops(true);
}


virtual void dragEnterEvent(QDragEnterEvent *e)
{
    e->accept();
    //QTextEdit::dragEnterEvent(e);
}

virtual void dragLeaveEvent(QDragLeaveEvent *e)
{
    e->accept();
    //QTextEdit::dragLeaveEvent(e);
}
//
virtual void dragMoveEvent(QDragMoveEvent *e)
{
    e->accept();
   // QTextEdit::dragMoveEvent(e);
}

virtual void dropEvent(QDropEvent *e)
{
    QTextEdit::dropEvent(e);
}

bool canInsertFromMimeData(const  QMimeData *source ) const
{
    if (source->hasImage())
        return true;
    else
        return QTextEdit::canInsertFromMimeData(source);
}


void insertFromMimeData( const QMimeData *source )
{
    if (source->hasImage())
    {
        QImage image = qvariant_cast<QImage>(source->imageData());
        QTextCursor cursor = this->textCursor();
        QTextDocument *document = this->document();
        document->addResource(QTextDocument::ImageResource, QUrl("image"), image);
        cursor.insertImage("image");
    }
}
};

context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context context

Answer 1

这取决于您从哪个应用程序拖动图像以及该应用程序决定在操作中包含哪些数据。如果它不适合您，那是因为您删除的任何内容都不包含图像数据，可能只包含 URL 或文件路径。

从 Windows 7 下的文件资源管理器中拖动图像对我来说至少不起作用，但在最新版本的 Firefox 中打开图像并将其拖动到文本编辑中确实有效。尝试一下:)