Winproc ärger

[Sunlight7]

Zitat:

WM_DRAWITEM

idCtl = (UINT) wParam; // control identifier
lpdis = (LPDRAWITEMSTRUCT) lParam; // item-drawing information


The WM_DRAWITEM message is sent to the owner window of an owner-drawn button, combo box, list box, or menu when a visual aspect of the button, combo box, list box, or menu has changed.

Parameters

idCtl

Value of wParam. Specifies the identifier of the control that sent the WM_DRAWITEM message. If the message was sent by a menu, this parameter is zero.

lpdis

Value of lParam. Points to a DRAWITEMSTRUCT structure containing information about the item to be drawn and the type of drawing required.

Return Value

If an application processes this message, it should return TRUE.

Das meinte er mit der 0