学步园

应用程序的exe的名称可以随意更改，但是如果程序内部弹出一个系统对话框，这时候就会发现对话框的标题和应用程序的名称不一致了。怎么办呢？
系统内部弹出的对话框一般调用的是AfxMessageBox()函数，那就检查一下这个函数吧。一路跟下去，最后发现到了CWinApp类中。

int CWinApp::ShowAppMessageBox(CWinApp *pApp, LPCTSTR lpszPrompt, UINT nType, UINT nIDPrompt)

{

// disable windows for modal dialog

DoEnableModeless(FALSE);

HWND hWndTop;

HWND hWnd = CWnd::GetSafeOwner_(NULL, &hWndTop);

// re-enable the parent window, so that focus is restored

// correctly when the dialog is dismissed.

if (hWnd != hWndTop)

EnableWindow(hWnd, TRUE);

// set help context if possible

DWORD* pdwContext = NULL;

DWORD dwWndPid=0;

GetWindowThreadProcessId(hWnd,&dwWndPid);

if (hWnd != NULL && dwWndPid==GetCurrentProcessId() )

{

// use app-level context or frame level context

LRESULT lResult = ::SendMessage(hWnd, WM_HELPPROMPTADDR, 0, 0);

if (lResult != 0)

pdwContext = (DWORD*)lResult;

}

// for backward compatibility use app context if possible

if (pdwContext == NULL && pApp != NULL)

pdwContext = &pApp->m_dwPromptContext;

DWORD dwOldPromptContext = 0;

if (pdwContext != NULL)

{

// save old prompt context for restoration later

dwOldPromptContext = *pdwContext;

if (nIDPrompt != 0)

*pdwContext = HID_BASE_PROMPT+nIDPrompt;

}

// determine icon based on type specified

if ((nType & MB_ICONMASK) == 0)

{

switch (nType & MB_TYPEMASK)

{

case MB_OK:

case MB_OKCANCEL:

nType |= MB_ICONEXCLAMATION;

break;

case MB_YESNO:

case MB_YESNOCANCEL:

nType |= MB_ICONQUESTION;

break;

case MB_ABORTRETRYIGNORE:

case MB_RETRYCANCEL:

// No default icon for these types, since they are rarely used.

// The caller should specify the icon.

break;

}

}

#ifdef _DEBUG

if ((nType & MB_ICONMASK) == 0)

TRACE(traceAppMsg, 0, "Warning: no icon specified for message box.\n");

#endif

TCHAR szAppName[_MAX_PATH];

szAppName[0] = '\0';

LPCTSTR pszAppName;

if (pApp != NULL)

pszAppName = pApp->m_pszAppName;

else

{

pszAppName = szAppName;

DWORD dwLen = GetModuleFileName(NULL, szAppName, _MAX_PATH);

if (dwLen == _MAX_PATH)

szAppName[_MAX_PATH - 1] = '\0';

}

int nResult =

::AfxCtxMessageBox(hWnd, lpszPrompt,
pszAppName, nType);

// restore prompt context if possible

if (pdwContext != NULL)

*pdwContext = dwOldPromptContext;

// re-enable windows

if (hWndTop != NULL)

::EnableWindow(hWndTop, TRUE);

DoEnableModeless(TRUE);

return nResult;

}

红字的地方是关键，最终pszAppName的值会指向当前应用程序的一个字符串m_pszAppName，这个值是开放的可以被动态修改的。如此一来，在应用程序初始化之前修改m_pszAppName这个值就会更改AfxMessageBox的标题了。
那这个m_pszAppName的值怎么修改呢？很简单。

WCHAR* szAppName = new WCHAR[MAX_PATH];
lstrcpy(szAppName , L"TargetTitle");
AfxGetApp()->m_pszAppName = szAppName;

转载自：http://blog.163.com/lvan100@yeah/blog/static/68117214201182054059645/