Windows核心編程：第1章 錯誤處理

Github

https://github.com/gongluck/Windows-.git

//第1章 錯誤處理.cpp: 定義應用程式的入口點。
//

#include "stdafx.h"
#include "第1章 錯誤處理.h"

int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
    _In_opt_ HINSTANCE hPrevInstance,
    _In_ LPWSTR    lpCmdLine,
    _In_ int       nCmdShow)
{
    HANDLE hFile = CreateFile(TEXT("C:\\gongluck"), 0, 0, NULL, OPEN_EXISTING, 0, NULL);
    DWORD err = GetLastError();;
    HLOCAL hlocal = NULL;
    if (err != ERROR_SUCCESS)
    {
        //將錯誤碼（可指定自然語言）格式化輸出
        DWORD res = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_ALLOCATE_BUFFER,
            NULL,
            err,
            MAKELANGID(LANG_NEUTRAL, SUBLANG_NEUTRAL),
            (LPTSTR)&hlocal,
            0,
            NULL);
        MessageBox(NULL, (PCTSTR)hlocal, TEXT("err"), MB_OK);
    }

    //FormatMessage的格式化輸出功能
    int nYear = 2018, nMonth = 5, nDay = 22;
    TCHAR szYear[5], szMonth[3], szDay[3];
    wsprintf(szYear, TEXT("%d"), nYear);
    wsprintf(szMonth, TEXT("%d"), nMonth);
    wsprintf(szDay, TEXT("%d"), nDay);
    LPWSTR lpSource = (LPWSTR)TEXT("今天是:%1年%2月%3日");
    DWORD_PTR pArgs[] = { (DWORD_PTR)szYear, (DWORD_PTR)szMonth, (DWORD_PTR)szDay };
    const DWORD size = 100 + 1;
    WCHAR buffer[size];
    if (FormatMessage(FORMAT_MESSAGE_FROM_STRING | FORMAT_MESSAGE_ARGUMENT_ARRAY,
        lpSource,
        NULL,
        NULL,
        buffer,
        size,
        (va_list*)pArgs))
    {
        MessageBox(NULL, buffer, TEXT("Date"), MB_ICONINFORMATION);
    }
    //
    system("pause");
    return 0;
}