Assertion error caused by DDX_Radio

[reneb]

I tried setting the data exchange in a dialogue box that has a radio button using DDX_Radio:
DDX_Radio(pDX, IDC_Res01, restest1);
This statement caused an assertion at runtime but no errors at compile time. I don't understand why if it is the normal routine for doing Data Exchange. Is there a routine for handleling or using radio buttons? Must I create a member of type control for it? I have the Radio Button in the Dialogue box but I can't get it to work. Please show me a routine. Thank you so much in advance.

 

[palbano]

Dear reneb,

When you place radio controls into a dialog in the resource editor, check the 'Group' property for the first radio button in the group. Then make sure that all the rest of the radio buttons in the group have sequential tab order numbers from the first one.

Now open ClassWizard and go to the member varibles tab. Only the first radio control shows up in the control list. Select it and 'Add' a member variable of type Category 'Value' and type of 'int'. After clicking on OK the ClassWizard dialog should display "radio control group transfer" under the Control ID's list when the radio control is selected in the list box.

Now that dialog member variable will contain the value 0 thru n denoting which radio button in the group is selected after you call the dialog's UpdateData() member function.

Hope this helps
-pete