Input Parameters | Significance |
int (*fnc)() | pointer to menu trigger function |
Output Parameters | Significance |
none | - |
Return Code | Significance |
0 | action was registered |
1 | action was not registered |
The function passed will be called after a selection-tool button at the field has been clicked on.
If the function is called several times with different function pointers, the functions passed in this way form a stack, which is executed at the trigger moment. If one of the functions in the stack delivers a return code other than zero, the next trigger function in the stack will be jumped to (no mouse action on selection tool button registered). If the return code = 0, the execution of the function will be terminated.