simple winmain application

SimpleWinMain.cpp

// bsm.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "bsm.h"

HINSTANCE hInst;
TCHAR szTitle[] = TEXT("");
TCHAR szWindowClass[] = TEXT(" ");

LRESULT CALLBACK
WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) {
  switch (message) {
    case WM_DESTROY:
      PostQuitMessage(0);
      break;
    default:
      return DefWindowProc(hWnd, message, wParam, lParam);
  }
  return 0;
}

ATOM MyRegisterClass(HINSTANCE hInstance) {
  WNDCLASSEX wcex;

  wcex.cbSize = sizeof(WNDCLASSEX);

  wcex.style = CS_HREDRAW | CS_VREDRAW;
  wcex.lpfnWndProc = WndProc;
  wcex.cbClsExtra = 0;
  wcex.cbWndExtra = 0;
  wcex.hInstance = hInstance;
  wcex.hIcon = NULL;
  wcex.hCursor = NULL;
  wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
  wcex.lpszMenuName = NULL;
  wcex.lpszClassName = szWindowClass;
  wcex.hIconSm = NULL;

  return RegisterClassEx(&wcex);
}

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) {
  hInst = hInstance;

  HWND hWnd =
      CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
                   0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

  if (!hWnd) {
    return FALSE;
  }

  return TRUE;
}

int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
                       _In_opt_ HINSTANCE hPrevInstance, _In_ LPTSTR lpCmdLine,
                       _In_ int nCmdShow) {
  MyRegisterClass(hInstance);

  // Perform application initialization:
  if (!InitInstance(hInstance, nCmdShow)) {
    return FALSE;
  }

  // Main message loop:
  MSG msg;
  while (GetMessage(&msg, NULL, 0, 0)) {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }

  return (int)msg.wParam;
}