Visual C++ 2011416

一.获取系统语言和位置

相关函数

void UserLCID()
{
    //Returns the locale identifier for the user default locale. 
    LCID id=::GetUserDefaultLCID();
    cout << id <<endl;
    WCHAR strNameBuffer[LOCALE_NAME_MAX_LENGTH];
    DWORD error = ERROR_SUCCESS;
    //Converts a locale identifier to a locale name.
    LCIDToLocaleName(id ,strNameBuffer,LOCALE_NAME_MAX_LENGTH,0);
    cout << strNameBuffer <<endl;
    //Converts a locale name to a locale identifier.
    LCID id2=::LocaleNameToLCID(strNameBuffer,0);
    //Returns the locale identifier for the system locale. 
    LCID id3=::GetSystemDefaultLCID();
}

void UserLangID()
{
    //Returns the language identifier for the current user locale.
    LANGID id=::GetUserDefaultLangID();
    //Returns the language identifier for the system locale.
    LANGID id2=::GetSystemDefaultLangID();
}

设置当前线程的Locate

void ThreadLocal()
{
    //Returns the locale identifier of the current locale for the calling thread. 
    LCID id=::GetThreadLocale();
    ::SetThreadLocale(id);
}

设置线程语言偏好

二.c打印函数

printf可输出char字符,wprintf可输出宽字符

char   ch = 'h', *string = "computer";
int    count = -9234;
double fp = 251.7366;
wchar_t wch = L'w', *wstring = L"Unicode";


/* Display characters. */

printf("Characters in field (1):\n%10c%5hc%5C%5lc\n", ch, ch, wch, wch);
wprintf(L"Characters in field (2):\n%10C%5hc%5c%5lc\n", ch, ch, wch, wch);

wsprintf 填充一段缓冲区

TCHAR tcBuffer[1024] = {0};
wsprintf(tcBuffer,L"Age = %d,Name = %s\n",10,L"hello");
wprintf(tcBuffer);

三.DDX数据交换机制UpdateData

如果WPF的数据绑定,当UpdateData(TRUE)时则是UI更新数据,False则是数据更新UI控件数据

首先进行变量绑定，DDX_Text(pDX, IDC_EDIT, m_edit);
需要注意的是UpdateData方法是对于整个窗体范围的,而非一个控件

参考：http://hi.baidu.com/kxw102/blog/item/c3d7623599b653375ab5f55c.html

四.ZeroMemory,memset(清零操作)

memset
Sets buffers to a specified character.

char buffer[] = "This is a test of the memset function";
int a=sizeof(buffer);
printf( "Before: %s\n", buffer );
memset( buffer, '*', strlen(buffer));
printf( "After:  %s\n", buffer );

ZeroMemory全部置0

char buffer[] = "This is a test of the memset function";
int a=sizeof(buffer);
printf( "Before: %s\n", buffer );
ZeroMemory(buffer,strlen(buffer));
printf( "After:  %s\n", buffer );

参考：http://blog.csdn.net/yacper/archive/2010/01/25/5254294.aspx

注意是清零而已,并非改变了数据结构的大小,数据重置而已,不要对类进行此操作

五.注册表操作

1.打开注册表

int res = RegOpenKeyEx(HKEY_LOCAL_MACHINE,
    "HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0",0,KEY_QUERY_VALUE,&hKey);

2.查询键值

res = ::RegQueryValueEx(hKey,"~MHz",NULL,NULL,(LPBYTE)data1,&dataSize);

3.设置键值

RegSetValueEx(hKey,"name",0,REG_SZ,(unsigned char*)name,strlen(name));

4.删除键值

RegDeleteKey(hKey,"name");

5.创建键值

rs = RegCreateKey(HKEY_LOCAL_MACHINE,"SOFTWARE\\USER\\INFO",&hKey);

6.释放句柄

RegCloseKey(hKey);