REFERENCE GUIDE

WM_PARENTNOTIFYCommentsThis message is also sent to all ancestor windows of the child window,including the top-level window.This message is sent to the parent of all child windows unless the childhas the extended window style WS_EX_NOPARENTNOTIFY;CreateWindowEx creates a window with extended window styles. Bydefault, child windows in a dialog box have theWS_EX_NOPARENTNOTIFY style unless the child window was createdby calling the CreateWindowEx function.This message inserts the data from the clipboard into the control windowat the current cursor position. Data are inserted only if the clipboardcontains data in CF _TEXT format.Parameters wParam Is not used.lParamIs not used.WM_QUERYDRAGICON 3.0This message is sent to a minimized (iconic) window which is about to bedragged by the user but which does not have an icon defined for its class.When the user drags the icon of a window without a class icon, Windowsreplaces the icon with a default icon cursor. If the application needs adifferent cursor to be displayed during dragging, it must return thehandle of a monochrome cursor compatible with the display driver'sresolution. The application can call the LoadCursor function to load acursor from the resources in its executable file and to obtain this handle.Parameters wParam Is not used.Return valuelParamIs not used.The return value contains in its low-order word the handle of the cursorwhich Windows is to display while the user drags the icon. The returnvalue is NULL if Windows is to display the default icon cursor. Thedefault return value is NULL.680 Software development kit