What must ý do after placed a custom control on dialogbox? thanks
See my splitter control tuts at here.is/ComInAsm in the non-COM section. It's explained in there.
you can create any sort of control in a dialog box with a CONTROL resource. ie CONTROL "Window Name",100,"msctls_progress32",PB_SMOOTH,10,10,100,10,WS_EX_CLIENTEDGE