<TQObject::CheckConnectArgs>: slot test() does not exi

Antje · May 18, 2005, 3:08pm

Hello,

I have written a program plotting different graphs with different parameters. For this program I wanted a graphical userinterface with bottons.Please find attached my code.
When I’m compiling this with the command:
g++ root-config --cflags root-config --libs -lGui -o getPanel.cpp,
and run the executable, I got the error: TQObject::CheckConnectArgs: slot test() does not exist.

Where is the error?

Yours sincerely

Antje Putze
LPSC Grenoble
Panel.h (324 Bytes)
getPanel.cpp (2.95 KB)

antcheva · May 18, 2005, 4:33pm

Hi Antje,

The signals/slots communication mechanism uses the dictionary information. It seems you did not create a PanelLinkDef.h file for your class Panel containing:

#pragma link C++ class Panel+;

Use:

rootcint -f getPanelDict.cpp -c Panel.h PanelLinkDef.h

to create the dictionary and than:

g++ `root-config --cflags --glibs` -o getPanel getPanel.cpp getPanelDict.cpp

Please find attached your files with some code fixes.

Best regards, Ilka
PanelLinkDef.h (31 Bytes)
getPanel.cpp (2.97 KB)
Panel.h (403 Bytes)

antcheva · May 18, 2005, 4:48pm

Hi Antje,

Just forgot to add the following:

for more details about LinkDef.h please read ftp://root.cern.ch/root/doc/chapter13.pdf
about signals/slots please have a look at: ftp://root.cern.ch/root/doc/chapter23.pdf
sub-chapter “Event Processing: Signals and Slots”

Cheers, Ilka

Antje · May 19, 2005, 7:28am

Hi Ilka,

thanks for your help. It works.

Cheers

Antje