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I am trying to emit an signal() inside an dropevent() and i am getting error

"protected: void __thiscall ImageArea::imageObjectDroped(void)" (?imageObjectDroped@ImageArea@@IAEXXZ) referenced in function "public: virtual void __thiscall ImageArea::dropEvent(class QDropEvent *)" (?dropEvent@ImageArea@@UAEXPAVQDropEvent@@@Z)"

what exactly i want to do is i trigger an singnal when drop is carred out on child widget.

class MyWindow : public QWidget
{
Q_OBJECT // Enable signals and slots
public:
MyWindow();
void dropEvent(QDropEvent *event);
signals:
void created();
};

can i do this or can there be an work arround.

what piece of code do i need to write in void ImageArea::imageObjectDroped(), do i need to write connect here, or some thing else.

I am sending along code.... this piece of code dont call CallbackImageObjectDroped() function of parent.... if any modifications are needed then please do tell me....

class ImageArea : public QLabel
{
public:
ImageArea(QWidget *parent);
signals:
void imageObjectDroped();
private:
void dropEvent(QDropEvent *event);
};

ImageArea::ImageArea(QWidget *parent): QLabel(parent)
{
setAcceptDrops(true);
connect(this, SIGNAL(imageObjectDroped()), parent, SLOT(CallbackImageObjectDroped()));
}

void ImageArea::dropEvent(QDropEvent *event)
{
if (event->mimeData()->hasFormat("application/x -Image")) {
emit imageObjectDroped();
} else {
event->ignore();
}
}

void ImageArea::imageObjectDroped()
{
}

Quoted

if (event->mimeData()->hasFormat("application/x -Image"))

this won't cause any problem as this is just an check for a specified drop format and i want ot emit signal only when a specified format of data is droped, i dont want this to happen for all drop types....