ulDialogCode (ULONG)

      Dialog code information flags.

      DLGC_ENTRYFIELD

        Identifies an entry field control. Assumed to understand the EM_SETSEL message.
      DLGC_BUTTON
        Identifies a button item. Assumed to understand the BM_CLICK message.
      DLGC_RADIOBUTTON
        Identifies a radio button control. Used with the DLGC_BUTTON code.
      DLGC_STATIC
        Identifies a static control. Static controls are not included in arrow key enumeration.
      DLGC_DEFAULT
        Identifies a default push-button control.
      DLGC_PUSHBUTTON
        Identifies a nondefault push button.
      DLGC_CHECKBOX
        Identifies a check-box item. Used with the DLGC_BUTTON code.
      DLGC_SCROLLBAR
        Identifies a scroll bar control.
      DLGC_MENU
        Identifies a menu control.
      DLGC_TABONCLICK
        Used by static controls to indicate that a mouse click on this control will cause focus to be placed on the next control in the dialog that has the WP_TABSTOP style. This should be useed in combination with the DLGC_STATIC code.
      DLGC_MLE
        Identifies a multiline entry field control.


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