However, the connector class must know the parameter types used in those particular signals and slots. To give an example, assuming that you're trying to connect a signal with a parameter type of QString to a slot with a parameter type of char, you can do it like this. Hi All, I need to know the QT signal equivalent in c#.I analysed about the Qt Signal and slot concept,think which is similer to Delegate and events.But i have a doubt in Deleghate and events.I will mentioned the doubt by code snippet(in Qt) //Declaring the signal but it has no implementation. I'm not 100% sure I understand your question but here's. Signals and slots with parameters. The signal and slots mechanism is type safe. In C this implies that both the number of arguments and the type of the arguments in a signal must match the arguments in the receiving slot. In Qt's Signal and slots architecture the receiving slot can actually have fewer parameters than the emitted signal, the.
Hello,
I'm making a Sudoku (solving/generating) program in Qt. Now, I'm just a beginner as a programmer, and I have no experience with Qt. I'm stuck in a strange situation. I want to connect a signal and slot with different parameters.
My grid is made up of an array of QLineEdits, and here's how I'm making the connections:
The 3 parameters of checkInput() are the minigrid, row and column numbers of the respective box in the grid. Qt doesn't accept Signals and Slots with different parameters, so how do I go about doing this?
Do I:
1) Overload returnPressed() of QLineEdit ? Is this even possible?
2) Create my own Signal in the Grid class? If so, how do I connect this signal to returnPressed() ? (if I do, then both will need to have void parameters. What how do I get the values of minigrid, row and column then?)
3) Change the structure of my grid? Use 81 connect statements ?
4) Can I subclass QLineEdit, and make my own signal in it?
Any help with this will be greatly appreciated...
Qt Connect Two Signal
Qt Connect Signal Slot With Parameters
Hello,
I'm making a Sudoku (solving/generating) program in Qt. Now, I'm just a beginner as a programmer, and I have no experience with Qt. I'm stuck in a strange situation. I want to connect a signal and slot with different parameters.
My grid is made up of an array of QLineEdits, and here's how I'm making the connections:
The 3 parameters of checkInput() are the minigrid, row and column numbers of the respective box in the grid. Qt doesn't accept Signals and Slots with different parameters, so how do I go about doing this?
Do I:
1) Overload returnPressed() of QLineEdit ? Is this even possible?
2) Create my own Signal in the Grid class? If so, how do I connect this signal to returnPressed() ? (if I do, then both will need to have void parameters. What how do I get the values of minigrid, row and column then?)
3) Change the structure of my grid? Use 81 connect statements ?
4) Can I subclass QLineEdit, and make my own signal in it?
Any help with this will be greatly appreciated...