add custem pages to control panel applets

在桌面属性里面添加一个页面STDMETHODIMPCDisplayCplExt::AddPages(LPFNADDPROPSHEETPAGElpfnAddPage,LPARAMlParam){//ThismethodaddsanewpagetotheDisplaypropertysheet.PROPSHEETPAGEpsp;HPROPSHEETPAGEhPage;//SetupthePROPSHEETPAGEstruct.ZeroMemory(&psp,sizeof(PRO