you have to get submenu for show like this: pM = new CMenu(); pM->LoadMenu(IDR_POPUP); CMenu* pSubMenu = pM->GetSubMenu(0); pSubMenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_LEFTBUTTON, mypoint.x,mypoint.y, AfxGetMainWnd());

WM_SYSCOMMAND wParam : SC_MINIMIZE SC_RESTORE

STL list

You can use AfxMessageBox function to deflate the error code.

MS's bug.

WM_CTLCOLOR

For the button caption “MYIMAGE,” for example, the IDs would be “MYIMAGEU,” “MYIMAGED,” “MYIMAGEF,” and “MYIMAGEX.” You must specify the ID of your bitmaps within double quotes.

you must get the control id first. to get control id, you can use FindWindow and GetDlgCtrlID()... then: HWND hWnd = FindWindow(....); ::SendMessage( hWnd, WM_COMMAND, nButtonID, 0 );

use two sockets, one for listen, one for send.

typedef struct tagRET_VAL { int code; void* pValue; }RET_VAL, *PRETVAL; enum CODE{ CODE_INT, CODE_STRING }; void fun1() { int a = 10; RET_VAL rv; rv.code = CODE_INT; rv.pValue = &a; return &rv; } void fun2() { char s[] = "hello"; RET_VAL rv; rv.code = CODE_STRING; rv.pValue = s; return &rv; } void GetValue( PRET_VAL pRV ) { switch( pRV->code ) { case CODE_INT: // do something with (int *)pRV->pValue .... break; case CODE_STRING: // do something with (char *)pRV->pValue ... break; } }