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I also find the C# method of having to prefix arguments with the word out confusing, particularly as you have to do it both in the called and calling routine. To do the same thing in Visual C#, you have to copy the array, add a value and then copy it back: That’s hardly the point!

C# is a much fussier language than Visual Basic (even if you turn Option Strict on in Visual Basic, this is still true). The point is that – as so often – Visual Basic makes something easier to code than C# does.

Alternatively, you can use it to extend subclasses of standard widgets.

A compile time processed form can be used in your application with one of the following approaches: declaration.

The direct approach provides a quick and easy way to use simple, self-contained components in your applications.However, componens created with Qt Designer often require close integration with the rest of the application code.For instance, the code provided above will compile and run, but the QSpin Box objects will not interact with the QLabel as we need a custom slot to carry out the add operation and display the result in the QLabel.You can’t do this using Switch in C#, as – astonishingly – it can’t handle relational operators. But even if you could, you’d still have to type in lots of unnecessary Break statements: But it’s even worse than that.If you then rename a control (in this case btn Apply) you have to re-associate the event-handler with the renamed control in the properties window (or in the initialisation code, if you can find it).

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