Windows 7 弹出系统菜单不正常（IContextMenu相关），求大神指教

[BlackNoodle]

网上搜到的代码改了一下，系统菜单可以弹出，但是，上面没有任何文字 所有菜单项点击执行正常，但就是木有文字。
原来的代码是罗朝辉大神写的，地址如下：http://www.cppblog.com/kesalin/archive/2008/02/23/43124.html


修改后代码如下：

static IContextMenu2*  g_pIContext2 = NULL;
static IContextMenu3*  g_pIContext3 = NULL;
void RightMenu(HWND handle,IShellFolder* folder,ITEMIDLIST* pIID)
{
    HWND hwnd    = handle;
    LPCONTEXTMENU pContextMenu = NULL;
    LPCONTEXTMENU pCtxMenuTemp = NULL;
    g_pIContext2 = NULL;
    g_pIContext3 = NULL;
    int menuType = 0;
    HRESULT hRslt = folder->GetUIObjectOf(
                hwnd,
                1,
                (LPCITEMIDLIST*)&(pIID),
                IID_IContextMenu,
                0,
                (void**)&pCtxMenuTemp);
    if (FAILED(hRslt))
    {
        return;
    }
    POINT pt;
    GetCursorPos(&pt);
    if (pCtxMenuTemp->QueryInterface(IID_IContextMenu3,(void**)&pContextMenu) == NOERROR)
    {
        menuType = 3;

        std::cout<<std::endl<<"menu type is 3"<<std::endl;
    }
    else if (pCtxMenuTemp->QueryInterface(IID_IContextMenu2,(void**)&pContextMenu) == NOERROR)
    {
        menuType = 2;

        std::cout<<std::endl<<"menu type is 2"<<std::endl;
    }
    if(pContextMenu)
    {
        std::cout<<"new menu got"<<std::endl;
        pCtxMenuTemp->Release();
    }
    else
    {
        std::cout<<"it's old menu"<<std::endl;
        pContextMenu = pCtxMenuTemp;
        menuType = 1;
    }
    if (menuType == 0)
    {
        std::cout<<"there's no menu"<<std::endl;
        return;
    }
    HMENU hMenu = CreatePopupMenu();
    hRslt = pContextMenu->QueryContextMenu(hMenu,0,1,0x7FFF,CMF_EXPLORE);

    if (FAILED(hRslt))
    {
        return;
    }
    WNDPROC oldWndProc = NULL;
    if (menuType > 1)
    {
        oldWndProc = (WNDPROC)SetWindowLongPtr(handle,GWL_WNDPROC,(LONG)HookWndProc);
		SLINT err = GetLastError();
        if(err)
            std::cout<<"Something wrong when SetWidowLongPtr: "<<err<<std::endl;
        if(menuType == 2)
        {
            g_pIContext2 = (LPCONTEXTMENU2) pContextMenu;
        }
        else
        {
            g_pIContext3 = (LPCONTEXTMENU3) pContextMenu;
        }
    }
    else
    {
        oldWndProc = NULL;
    }
    int cmd = TrackPopupMenu(
                hMenu,
                TPM_LEFTALIGN | TPM_BOTTOMALIGN | TPM_RETURNCMD | TPM_LEFTBUTTON,
                pt.x,
                pt.y,
                0,
                hwnd,
                0);
    if (oldWndProc)
    {
        SetWindowLongPtr(handle,GWL_WNDPROC,(LONG)oldWndProc);
    }
    if (cmd != 0)
    {
        CMINVOKECOMMANDINFO ci = { 0 };
        ci.cbSize = sizeof(CMINVOKECOMMANDINFO);
        ci.hwnd   = hwnd;
        ci.lpVerb = (LPCSTR) MAKEINTRESOURCE(cmd - 1);
        ci.nShow  = SW_SHOWNORMAL;
        pContextMenu->InvokeCommand(&ci);
    }
    pContextMenu->Release();
    g_pIContext2 = NULL;
    g_pIContext3 = NULL;
    DestroyMenu(hMenu);
}
LRESULT CALLBACK HookWndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    DRAWITEMSTRUCT *ds = (DRAWITEMSTRUCT*)lParam;
    switch (message)
    {
    case WM_MENUCHAR:
        if (g_pIContext3)
        {
            LRESULT lResult = 0;
            g_pIContext3->HandleMenuMsg2(message, wParam, lParam, &lResult);
            return(lResult);
        }
        break;
    case WM_DRAWITEM:
    case WM_MEASUREITEM:
        if(wParam)
        {
            break;
        }
    case WM_INITMENUPOPUP:
        if (g_pIContext2)
        {
            g_pIContext2->HandleMenuMsg(message, wParam, lParam);
        }
        else
        {
            if(g_pIContext3)
                g_pIContext3->HandleMenuMsg(message, wParam, lParam);
        }
        return(message == WM_INITMENUPOPUP ? 0 : TRUE);
        break;
    default:
        break;
    }
    return ::CallWindowProc((WNDPROC) GetProp(hWnd, TEXT("oldWndProc")), hWnd, message, wParam, lParam);
}

[jimette]

你在rc编辑器里面加入了么？！

• 打赏
• 举报

回复 赞

[BlackNoodle]

引用 1 楼 sha_jinhao 的回复:

你在rc编辑器里面加入了么？！

这个跟RC没关系吧 ……

• 打赏
• 举报

回复 赞

[erfbe1]

oldWndProc = (WNDPROC)SetWindowLongPtr(handle,GWL_WNDPROC,(LONG)HookWndProc); 去掉HookWndProc即可，这应该是老代码，兼容Win9X的，XP和之后的Windows都不需要Hook。

• 打赏
• 举报

回复 赞