weixj2003ld
10th April 2009, 15:45
I define a class A as follows:
class A
{
protected:
void contentsMousePressEvent (QMouseEvent *e);
signals:
void extractClicked();
}
void A::contentsMousePressEvent (QMouseEvent *e)
{
.....
emit extractClicked();
}
when compile,error:error LNK2019: unresolved external symbol ...
means that can not find the function extractClicked.
Why?
class A
{
protected:
void contentsMousePressEvent (QMouseEvent *e);
signals:
void extractClicked();
}
void A::contentsMousePressEvent (QMouseEvent *e)
{
.....
emit extractClicked();
}
when compile,error:error LNK2019: unresolved external symbol ...
means that can not find the function extractClicked.
Why?