Sent during an ImageList Control load database procedure started by the L_ILM_LOADDATABASE message.
idCtrl = (L_INT) LOWORD(wParam) identifier of control.
wNotifyCode = HIWORD(wParam) notification code.
nIndex = (L_INT32) lParam index of the newly added item.
Sent when an ImageList Control is processing an L_ILM_LOADDATABASE message.
The parent window of the control receives this notification message through the WM_COMMAND message. During the processing of this message, you can cancel the procedure using the L_ILM_CANCELDB message.
For an example, refer to L_ILM_CANCELDB.
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