Multiple Checkboxes

Keywords:        dialog editor multiple checkboxes box variable default

---

You cannot have multiple checkboxes in a Dialog Box with the same variable name.

If you have multiple checkboxes with the same variable name, the only box that can actually be checked by default is the '1' box. And on exit, the only boxes in the group that are counted are the highest-numbered box and any consecutive checked boxes "below" it numerically.

For example, if '1', '4', and '8' are checked, the return value is 12 (since the '2' box is unchecked, it and the '1' box are ignored); if '1', '2', and '4' are checked, the return value is 0 (since the '8' box is unchecked).

The solution is to use different variable names for each checkbox, each with a value of 1, and 'OR' them together to build a composite value.

For example:

  box2 = 1
  box4 = 1
  ...
  Dialog("TEST")
  boxval = box1 | box2 | box3 | box4          ;NOTE: this is the Bitwise OR, not the Logical OR

Here is some sample code:

MyDialogFormat=`WWWDLGED,5.0`

MyDialogCaption=`WIL Dialog`
MyDialogX=57
MyDialogY=78
MyDialogWidth=172
MyDialogHeight=202
MyDialogNumControls=7

MyDialog01=`60,52,49,DEFAULT,CHECKBOX,box1,"box1",1`
MyDialog02=`60,68,49,DEFAULT,CHECKBOX,box2,"box2",1`
MyDialog03=`60,84,49,DEFAULT,CHECKBOX,box3,"box3",1`
MyDialog04=`60,100,49,DEFAULT,CHECKBOX,box4,"box4",1`
MyDialog05=`25,132,49,DEFAULT,PUSHBUTTON,DEFAULT,"select all",2`
MyDialog06=`86,132,49,DEFAULT,PUSHBUTTON,DEFAULT,"de-select all",3`
MyDialog07=`51,161,51,DEFAULT,PUSHBUTTON,DEFAULT,"OK",1`


:theDialog
retval= Dialog("MyDialog")


switch retval
    case 2
          box1 = 1
          box3 = 1
          box2 = 1
          box4 = 1
          goto theDialog
          break
    case 3
          box1 = 0
          box2 = 0
          box3 = 0
          box4 = 0 
          goto theDialog
          break
Endswitch

---

Article ID:   W12851

Filename:   Multiple Checkboxes.txt