integer-input ONLY textbox in GUI c++

[kenneth6]

How can I restrict the textbox in GUI C++ to integer-input ONLY ?

bcoz the function inside can only process int input parameter.

[Banfa]

What GUI are you using?

[kenneth6]

What GUI are you using?

MSVC++ 2005 Windows Form Application

[Laharl]

I'm not familiar with Microsoft C++, but if you take the input, you can check each character via the isdigit() function and if any aren't integers, you can clear it and tell the user to reenter.

[Banfa]

Use a masked text box, you can set the mask to only allow digit input

[kenneth6]

Use a masked text box, you can set the mask to only allow digit input

thanks! but how can i set the user-input value be 4-digit ONLY in the masked text box??

another similar question: how to set the user-input shown to be asterisks (like password box)?

[Studlyami]

One of the properties of the text-box should say something like password. change the value from false to true. As far as limiting only 4 digits i don't know of a way to limit that. You may just have to let them type what ever they want and then perform a check to see if there is more than 4 digits or not.

[kenneth6]

Use a masked text box, you can set the mask to only allow digit input

but how to use masked text box to allow digit input only ?

[Banfa]

but how to use masked text box to allow digit input only ?

In the property list for a masked text box there is property Mask set this to the mask of your input data.

You can read about masks here.