void KSnapshot::slotDragSnapshot()
{
QDragObject *drobj = new QImageDrag(snapshot.convertToImage(), this);
Q_CHECK_PTR(drobj);
drobj->setPixmap(mainWidget->preview());
drobj->dragCopy();
}
void mousePressEvent(QMouseEvent *e) {
if(e->button() == LeftButton) {
if(labeltype == Des)
return;
QDragObject *drobj = 0;
if(pixmap()) { // 如果有圖片
// 產生QDragObject
drobj = new QImageDrag(pixmap()->convertToImage(), this);
QPixmap pm;
// 產生縮圖
pm.convertFromImage(
pixmap()->convertToImage().smoothScale(25, 25));
// 拖曳時的顯示圖形與游標位移
drobj->setPixmap(pm, QPoint(-14, -20));
}
else if(text()) { // 如果有文字
drobj = new QTextDrag(text(), this);
drobj->setPixmap(QPixmap("text.gif"), QPoint(-25, -15));
}
// ?#125;始拖放動作
if(drobj)
drobj->dragCopy();
}
}
void TextShow::startDrag()
{
QDragObject *drag = new QTextDrag(selectedText(), viewport());
if ( isReadOnly() ) {
drag->dragCopy();
} else {
if ( drag->drag() && QDragObject::target() != this && QDragObject::target() != viewport() )
removeSelectedText();
}
}
void DropSite::mousePressEvent( QMouseEvent * /*e*/ )
{
QDragObject *d;
if ( pixmap() ) {
d = new QImageDrag( pixmap()->convertToImage(), this );
QPixmap pm;
pm.convertFromImage(pixmap()->convertToImage().smoothScale(
pixmap()->width()/3,pixmap()->height()/3));
d->setPixmap(pm,QPoint(-5,-7));
} else {
d = new QTextDrag( text(), this );
}
d->dragCopy();
}
/*! mouseMoveEvent - mouse move on the list box */
void DDListBox::mouseMoveEvent( QMouseEvent * )
{
if (count() == max_items && max_items != 0 && flag)
{
for (unsigned int i = 0; i < count(); i++)
changeItem( QPixmap( green_icon ) , text(i) , i);
flag = false;
}
if ( dragging && item(currentItem())->isSelectable() )
{
QDragObject *d = new QTextDrag( currentText() , this );
d->dragCopy(); // do NOT delete d.
dragging = FALSE;
unsigned int current = currentItem();
if (count() == max_items && max_items != 0)
{
char s[100];
strcpy(s, currentText());
char * traits;
traits = strtok(s," ");
traits = strtok(NULL, " ");
traits = strtok(NULL, " ");
traits = strtok(NULL, " ");
for (unsigned int i = 0; i < max_items; i++)
{
char s_i[100];
strcpy(s_i, text(i));
char * traits_i;
traits_i = strtok(s_i," ");
traits_i = strtok(NULL, " ");
traits_i = strtok(NULL, " ");
traits_i = strtok(NULL, " ");
bool b = (strcmp(traits,traits_i) == 0);
if (!b && i != current )
{
changeItem( QPixmap( white_icon ) , text(i) , i);
item(i)->setSelectable( b );
}
}
}
removeItem ( current );
}
}
void Test::initiateDrag( QWidget *w )
{
QDragObject *d = new QTextDrag( mWidget->label( mWidget->indexOf( w ) ), this );
d->dragCopy(); // do NOT delete d.
}
//! [0]
void MyQt3Widget::customStartDragFunction()
{
QDragObject *d = new QTextDrag( myHighlightedText(), this );
d->dragCopy();
// do NOT delete d.
}