OPENFILENAME_NT4A structure

• 12/05/2018
• 2 minutes to read

The OPENFILENAME_NT4 structure is identical to OPENFILENAME with _WIN32_WINNT set to 0x0400. It allows an application to take advantage of other post-Microsoft Windows NT 4.0 features while running on Microsoft Windows NT 4.0. Also, MFC42 applications must use OPENFILENAME_NT4 to avoid heap corruption. This is because Microsoft Foundation Classes (MFC) has classes with embedded OPENFILENAME structures, and you must use the same structure size.

Syntax

typedef struct tagOFN_NT4A {
  DWORD         lStructSize;
  HWND          hwndOwner;
  HINSTANCE     hInstance;
  LPCSTR        lpstrFilter;
  LPSTR         lpstrCustomFilter;
  DWORD         nMaxCustFilter;
  DWORD         nFilterIndex;
  LPSTR         lpstrFile;
  DWORD         nMaxFile;
  LPSTR         lpstrFileTitle;
  DWORD         nMaxFileTitle;
  LPCSTR        lpstrInitialDir;
  LPCSTR        lpstrTitle;
  DWORD         Flags;
  WORD          nFileOffset;
  WORD          nFileExtension;
  LPCSTR        lpstrDefExt;
  LPARAM        lCustData;
  LPOFNHOOKPROC lpfnHook;
  LPCSTR        lpTemplateName;
} OPENFILENAME_NT4A, *LPOPENFILENAME_NT4A;

Members

lStructSize

hwndOwner

hInstance

lpstrFilter

lpstrCustomFilter

nMaxCustFilter

nFilterIndex

lpstrFile

nMaxFile

lpstrFileTitle

nMaxFileTitle

lpstrInitialDir

lpstrTitle

Flags

nFileOffset

nFileExtension

lpstrDefExt

lCustData

lpfnHook

lpTemplateName

Requirements