win32 - Shell菜单项的创建

#include <windows.h>
#include <shobjidl_core.h>
#include <windowsx.h>
#include <shlobj_core.h>

#pragma comment(lib,"Shell32.lib")

#define MAX_LOADSTRING 100
#define SCRATCH_QCM_FIRST 1
#define SCRATCH_QCM_LAST  0x7FFF

IContextMenu2* g_pcm2;
IContextMenu3* g_pcm3;

...

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    int xPos;
    int yPos;

    if (g_pcm3) {
        LRESULT lres;
        if (SUCCEEDED(g_pcm3->HandleMenuMsg2(message, wParam, lParam, &lres))) {
            return lres;
        }
    }
    else if (g_pcm2) {
        if (SUCCEEDED(g_pcm2->HandleMenuMsg(message, wParam, lParam))) {
            return 0;
        }
    }
    switch (message)
    {
    case WM_CONTEXTMENU:
    {
        xPos = GET_X_LPARAM(lParam);
        yPos = GET_Y_LPARAM(lParam);
        OnContextMenu(hWnd, xPos, yPos);
    }
        break;
...

void OnContextMenu(HWND hwnd, int xPos, int yPos)
{
    WCHAR pszFilePath[] = L"C:\\Users\\xx\\Desktop\\1.txt";
    IShellFolder* psfDesktop = NULL;
    ITEMIDLIST* id = 0;
    LPCITEMIDLIST idChild = 0;
    IContextMenu* pcm = NULL;
    int iCmdTemp = 0;

    POINT pt = { xPos, yPos };
    if (pt.x == -1 && pt.y == -1) {
        pt.x = pt.y = 0;
        ClientToScreen(hwnd, &pt);
    }

    SHParseDisplayName(pszFilePath, 0, &id, 0, 0);
    SHBindToParent(id, IID_IShellFolder, (void**)&psfDesktop, &idChild);

    psfDesktop->GetUIObjectOf(hwnd, 1, (const ITEMIDLIST**)&idChild, __uuidof(IContextMenu), NULL, (void**)&pcm);

    if (pcm) {
        HMENU hmenu = CreatePopupMenu();
        if (hmenu) {
            if (SUCCEEDED(pcm->QueryContextMenu(hmenu, 0,
                SCRATCH_QCM_FIRST, SCRATCH_QCM_LAST,
                CMF_NORMAL))) {

                pcm->QueryInterface(IID_IContextMenu2, (void**)&g_pcm2);
                pcm->QueryInterface(IID_IContextMenu3, (void**)&g_pcm3);

                int iCmd = TrackPopupMenuEx(hmenu, TPM_RETURNCMD,
                    pt.x, pt.y, hwnd, NULL);
                if (g_pcm2) {
                    g_pcm2->Release();
                    g_pcm2 = NULL;
                }
                if (g_pcm3) {
                    g_pcm3->Release();
                    g_pcm3 = NULL;
                }
                if (iCmd > 0) {
                    CMINVOKECOMMANDINFOEX info = { 0 };
                    info.cbSize = sizeof(info);
                    info.fMask = 0x00004000;
                    info.hwnd = hwnd;
                    iCmdTemp = iCmd - SCRATCH_QCM_FIRST;
                    info.lpVerb = MAKEINTRESOURCEA(iCmdTemp);
                    info.lpVerbW = MAKEINTRESOURCEW(iCmdTemp);
                    info.nShow = SW_SHOWNORMAL;
                    pcm->InvokeCommand((LPCMINVOKECOMMANDINFO)&info);
                }

            }
            DestroyMenu(hmenu);
        }
        pcm->Release();
    }
}

相关：How to host an IContextMenu, part 5 – Handling menu messages