AxPipeAssert.cpp

Go to the documentation of this file.

#include "StdAfx.h"
#include <Shlwapi.h>
#include "AxPipeAssert.h"

#pragma warning(disable:4172)
const _TCHAR *
AxPipe::Assert::LastErrorMsg() {
    // Since this is only intended to be called for fatal failed asserts, including
    // memory allocation, we preallocate a fixed size buffer here.
    static _TCHAR szMsg[300];

    (void)lstrcpy(szMsg, _T("Invalid GetLastError()"));
    if (FormatMessage(FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_FROM_SYSTEM,
        NULL, GetLastError(), 0, szMsg, sizeof szMsg / sizeof szMsg[0], NULL) == 0) {
            return _T("FormatMessage()/GetLastError() failed.");
    }
    return szMsg;
};
#pragma warning(default:4172)

void
AxPipe::Assert::AssFunc(bool fOk, const _TCHAR *sz, const _TCHAR *szFile, int iLine) {
    if (!fOk) {
        MessageBoxF(NULL, _T("Failed assertion in %s at line %d\n\n%s"), _T("AxPipe"),  MB_OK|MB_ICONSTOP, PathFindFileName(szFile), iLine, sz);
        exit(1);
    }
}

void
AxPipe::Assert::MessageBoxF(HWND hWnd, const _TCHAR *szFmt, const _TCHAR *szCaption, UINT uType, ...) {
    va_list vaArgs;
    va_start(vaArgs, uType);

    // wvsprintf guarantees not to write more than 1024 chars
    static _TCHAR szBuf[1024];
    wvsprintf(szBuf, szFmt, vaArgs);
    va_end(vaArgs);
    MessageBox(hWnd, szBuf, szCaption, uType);
}

#ifdef _DEBUG
void
AxPipe::Assert::OutputDebugStringF(const _TCHAR *szFmt, ...) {
    va_list vaArgs;
    va_start(vaArgs, szFmt);

    // wvsprintf guarantees not to write more than 1024 chars
    static _TCHAR szBuf[1024];
    wvsprintf(szBuf, szFmt, vaArgs);
    va_end(vaArgs);
    OutputDebugString(szBuf);
}
#endif

---