RightClick-Menu

#define STRICT

#include <windows.h>
#include <stdio.h>

#define ID_CUT         1000
#define ID_COPY        1001
#define ID_PASTE       1002

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam, LPARAM lParam)
{
  CREATESTRUCT *cs;
  HMENU hMenu;
  POINT p;
  char szText[64];
  // Menu-item identifiers 
  static char szMenuItem[3][10] = 
  {
    "Cut", "Copy", "Paste"
  };

  switch (iMsg)
  {
    case WM_CREATE:
      cs = (LPCREATESTRUCT)lParam;
      break;

    case WM_RBUTTONUP:
      p.x = LOWORD(lParam);
      p.y = HIWORD(lParam);
      hMenu = CreatePopupMenu();
      AppendMenu(hMenu, MF_STRING, ID_CUT, "Cut");
      AppendMenu(hMenu, MF_STRING, ID_COPY, "Copy");
      AppendMenu(hMenu, MF_STRING, ID_PASTE, "Paste");
      ClientToScreen(hwnd, (LPPOINT) &p);
      TrackPopupMenu(hMenu, 0, p.x, p.y, 0, hwnd, NULL);
      DestroyMenu(hMenu);
      break;

    case WM_COMMAND:
      switch (LOWORD(wParam))
      {
      case ID_CUT:
      case ID_COPY:
      case ID_PASTE:
        sprintf(szText, "You chose %s", szMenuItem[LOWORD(wParam) - 1000]);
        MessageBox(hwnd, szText, "MenuApp", MB_OK);
        break;
      }
      break;

    case WM_CLOSE:
      DestroyWindow(hwnd);
      break;

    case WM_DESTROY:
      PostQuitMessage(0);
      break;
  }
  return DefWindowProc(hwnd, iMsg, wParam, lParam);
}

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine,
  int iCmdShow)
{
  HWND hwnd;
  MSG msg;
  WNDCLASS wndclass;
  char szAppName[] = "RightclickMenuApp";

  wndclass.style = 0;
  wndclass.lpfnWndProc = WndProc;
  wndclass.cbClsExtra = 0;
  wndclass.cbWndExtra = 0;
  wndclass.hInstance = hInstance;
  wndclass.hIcon = LoadIcon(hInstance, szAppName);
  wndclass.hCursor = LoadCursor(NULL, IDC_ARROW);
  wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
  wndclass.lpszMenuName = szAppName;
  wndclass.lpszClassName = szAppName;
  RegisterClass(&wndclass);

  hwnd = CreateWindow(szAppName, szAppName, WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0,
    0, 400, 400, NULL, NULL, hInstance, szCmdLine);

  while (GetMessage(&msg, NULL, 0, 0))
  {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
  return (int)msg.wParam;
}