WM_QUERYDLGCODE Return Value - ulDialogCode

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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