Problem with New Slot/Signal in QTDesigner4.4.3

Hi ,

I had problems with Signal/Slot editor, iam unable to create new user defined slot for Signal.
For exmple in my designer i want to create a slot for CALCULATE button.It means once i click the CALCULATE button it should calculate from the given inputs.

there is no opportunity to do this in Qt 4.x.x designer only in Qt 3.x.x.
so, you should create needed slot in sources.