REFERENCE GUIDE

WM_RENDERFORMATWM_RENDERFORMATThis message requests that the clipboard owner format the data lastcopied to the clipboard in the specified format, and then pass a handle tothe formatted data to the clipboard.Parameters wParam Specifies the data format. It can be anyone of the formatsdescribed with the SetClipboardData function.IParamIs not used.This message occurs if mouse input is not captured and the mouse causescursor movement within a window.Parameters wParam Contains a handle to the window that contains the cursor.CommentsIParamContains the hit-test area code in the low-order word and themouse message number in the high-order word.The DefWindowProc function passes the WM_SETCURSOR message to aparent window before processing. If the parent window returns TRUE,further processing is halted. Passing the message to a window's parentwindow gives the parent window control over the cursor's setting in achild window. The DefWindowProc function also uses this message to setthe cursor to an arrow if it is not in the client area, or to the registeredclasscursor if it is. If the low-order word of the IParam parameter isHTERROR and the high-order word of IParam is a mouse button-downmessage, the Message8eep function is called.The high-order word of IParam is zero when the window enters menumode.This message is sent after a window gains the input focus.Parameters wParam Contains the handle of the window that loses the input focus(may be NULL).CommentsIParamIs not used.To display a caret, an application should call the appropriate caretfunctions at this point.684 Software development kit