غیرفعال کردن آیدی منو

WM_INITMENUPOPUP=&H117
WM_RBUTTONDOWN=&H204


TPM_LEFTBUTTON = 0
TPM_RIGHTBUTTON = 2
TPM_LEFTALIGN = 0
TPM_CENTERALIGN = 4
TPM_RIGHTALIGN = 8
TPM_TOPALIGN = 0
TPM_VCENTERALIGN = 16
TPM_BOTTOMALIGN = 32
TPM_HORIZONTAL = 0
TPM_VERTICAL = 64

MF_BYCOMMAND = 0
MF_BYPOSITION = 1024
MF_SEPARATOR = 2048
MF_ENABLED = 0
MF_GRAYED = 1
MF_DISABLED = 2
MF_STRING = 0
MF_BITMAP = 4
MF_POPUP = 16
MF_UNHILITE = 0
MF_HILITE = 128
MF_SYSMENU = 8192
MF_HELP = 16384
MF_RIGHTJUSTIFY = 16384

Public Function WndProc

   Case WM_RBUTTONDOWN

hMenuPopUp = CreatePopupMenu

             "AppendMenuA hMenuPopUp, MF_STRING, IDM_CONTEXT_LINE, "Line

             "AppendMenuA hMenuPopUp, MF_STRING, IDM_CONTEXT_RECTAN, "Rectangle

            " AppendMenuA hMenuPopUp, MF_STRING, IDM_CONTEXT_CIRCLE, "Circle

             AppendMenuA hMenuPopUp, MF_SEPARATOR, 0, vbNullString

             "AppendMenuA hMenuPopUp, MF_STRING, IDM_CONTEXT_HELP, "Help

&EnableMenuItem hMenuPopUp, 1000, 1

TrackPopupMenu hMenuPopUp, TPM_RIGHTALIGN + TPM_RIGHTBUTTON, pt.x, pt.y, 0, lhwnd, rc

برای تغییر LayOut  پاپ آپ منو  باید از مسیج   WM_INITMENUPOPUP و  کلاس آن  که 32768# است و با تابع FindWindowA میتوان هندل آن را بدست آورد استفاده کرد ، برای اینکه درجایی که کرسر هست بازشود باید از تابع GetCursorPos بهره برد و x و y آنرا در Track گذاشت .

case WM_RBUTTONDOWN:
          
            HMENU hPopupMenu = CreatePopupMenu();
            InsertMenu(hPopupMenu, 0, MF_BYPOSITION + MF_STRING, ID_CLOSE, L"Exit");
            InsertMenu(hPopupMenu, 0, MF_BYPOSITION + MF_STRING, ID_EXIT, L"Play");
            SetForegroundWindow(hWnd);
            TrackPopupMenu(hPopupMenu, TPM_BOTTOMALIGN + TPM_LEFTALIGN, 0, 0, 0, hWnd, NULL);
          



 

EnableMenuItem در VB

(WndProc(ref Message m

    if  m.Msg = WM_INITMENUPOPUP

  (((int)m.LParam & 0x10000) != 0) 

   (EnableMenuItem(WParam,SC_MOVE,MF_DISABLED

End If