TrackPopupMenu and default taskbar menu

Hi everyone:

I'm not sure why this happens, so maybe someone can clear this up for me.

Say, I want to display a pop-up menu from my program's tray icon on the task bar. I do the following:

Code:

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                int nRes = TrackPopupMenu(hMenu, TPM_RIGHTALIGN | TPM_TOPALIGN |
                        TPM_LEFTBUTTON | TPM_VERPOSANIMATION | TPM_HORNEGANIMATION | TPM_RETURNCMD,
                        pnt.x, pnt.y, 0, hMainWnd, NULL);

---

Because of some bug in the Explorer shell the menu isn't dismissed when someone clicks outside of it, so I had to add the following code to accommodate for that (which can be found throughout Win32 forums online):

Code:

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                ::SetForegroundWindow(hMainWnd);

                int nRes = TrackPopupMenu(hMenu, TPM_RIGHTALIGN | TPM_TOPALIGN |
                        TPM_LEFTBUTTON | TPM_VERPOSANIMATION | TPM_HORNEGANIMATION | TPM_RETURNCMD,
                        pnt.x, pnt.y, 0, hMainWnd, NULL);

                PostMessage(WM_NULL, 0, 0);

---

That takes away that bug, but what happens is that at times when my tray icon is first displayed on the task bar's tray and I try to right-click it, I get my pop-up menu and also get the default task bar menu (picture below) displayed over it, as if I right-clicked the task bar itself. This happens only the first time I right-click my tray icon.

Can someone tell me why this happens and how to remedy that?


PS. I'm running these tests on a Windows 7 with a default theme (and glass effect enabled).

You need to show the code that creates the taskbar icon. Are you intercepting WM_RBUTTONDOWN or WM_CONTEXTMENU to display the popup menu?

I process both like this:

Code:

---

                case WM_RBUTTONDOWN:
                case WM_CONTEXTMENU:
                        {
                                ShowTrayPopupMenu();
                        }
                        break;

---

Is it supposed to be done differently?

Remove the redundant WM_RBUTTONDOWN case.

Code:

---

// case WM_RBUTTONDOWN:
case WM_CONTEXTMENU:
    {
      ShowTrayPopupMenu();
    }
    break;

---

As a general rule, never display a popup menu with WM_RBUTTONDOWN. Instead, use WM_CONTEXTMENU.

For some reason if I remove WM_RBUTTONDOWN it's not called at all.

My bad. For task bar icon popups, use WM_RBUTTONDOWN and remove WM_CONTEXTMENU.

Thanks, but I still get the same bug of two overlapping menus. I played a little with it, and to reproduce this bug you can add Sleep(500); after SetForegroundWindow call to make it come up for sure. I also believe that this only happens when some other window has keyboard focus (like any other Explorer window.)

Quote:

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Can someone tell me why this happens and how to remedy that?

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It seems the effect has nothing to do with your code. I had the effect of the kind in regular Explorer window while right clicking an element without selecting it previously. So it's rather Win7 Explorer behavior.