Edit Control Validation

[mjansonuk]

Hello

I want to add validation to dialog box so that when user clicks 'Next' button it prevents them continuing if 'Edit1' (a control on the form) is blank.

I have added two actions to the Next button behaviour:

1. Run custom action (Installscript) to display a message box on condition Edit1 = ""
2. NewDialog if Edit1 <> ""

Action 1 works fine, but action 2 never seems to execute even when Edit1 is not blank, so usercannot move on to the next dialog box.

Any suggestions please?

[TsungH]

It will probably easier if you post screenshots of Edit control property sheet and Control Events on Next button. Also, a verbose installation log may shed some light on this problem.

[skolte]

Assuming that you already have your custom dialog setup the way you want and have the InstallScript code with a switch statement to respond to different events, here's how I would write the code for NEXT button's switch case.

 // case statement for NEXT button click in your dialog
 case RES_PBUT_NEXT: 
    // Get the contents of the edit boxes.  
    // RES_EDITBOX is the control identifier for your Edit box, 
    // svEditText is a string to retrieve the input
    CtrlGetText (szDialogName, RES_EDITBOX, svEditText); 
               
    // Verify that edit box has data. 
    if (StrLength(svEditText) = 0)) then 
        MessageBox ("Text field cannot be empty.", INFORMATION); 
    else 
        bDone = TRUE; 
    endif; 
nResult = NEXT;

[mjansonuk]

Thanks for your responses, all works fine now 🙂