reactos/lib/sdk/crt/misc/__crt_MessageBoxA.c

   1 /*
   2  * PROJECT:         ReactOS C runtime library
   3  * LICENSE:         BSD - See COPYING.ARM in the top level directory
   4  * FILE:            lib/sdk/crt/__crt_MessageBoxA.c
   5  * PURPOSE:         __crt_MessageBoxA implementation
   6  * PROGRAMMER:      Timo Kreuzer (timo.kreuzer@reactos.org)
   7  */
   8
   9 #include <precomp.h>
  10
  11 /*****************************************************************************
  12  * \brief Displays a message box.
  13  *
  14  * \param pszText - The message to be displayed.
  15  * \param uType - The contents and behavior of the message box.
  16  * \return Identifies the button that was pressed by the user.
  17  * \see MessageBox
  18  *
  19  *****************************************************************************/
  20 int
  21 __cdecl
  22 __crt_MessageBoxA (
  23     _In_opt_ const char *pszText,
  24     _In_ unsigned int uType)
  25 {
  26     HMODULE hmodUser32;
  27     int (WINAPI *pMessageBoxA)(HWND, LPCTSTR, LPCTSTR, UINT);
  28     int iResult;
  29
  30     /* Get MessageBoxA function pointer */
  31     hmodUser32 = LoadLibrary("user32.dll");
  32     pMessageBoxA = (PVOID)GetProcAddress(hmodUser32, "MessageBoxA");
  33     if (!pMessageBoxA)
  34     {
  35         abort();
  36     }
  37
  38     /* Display a message box */
  39     iResult = pMessageBoxA(NULL,
  40                            pszText,
  41                            "ReactOS C Runtime Library",
  42                            uType);
  43
  44     FreeLibrary(hmodUser32);
  45     return iResult;
  46 }
  47