获取系统当前的输入法列表并通过编程方式切换输入法

1.获取输入法列表

//保存输入法信息的结构
    struct _tagInputMethod
    {
     char szLanguageId[30];
     char szLanguageName[100];
     char szLanguageImeFileName[100];
     HICON hIcon;
    };

_tagInputMethod m_InputMethodList[30];
    int m_InputMethodCount;

//获取输入法列表

HKEY hKey,hKey1;

DWORD cp=16;

char LanguageId[15];

CString szID;

CString szKeyName,szKeyName1;

szKeyName = "Keyboard Layout\\Preload";

szKeyName1 = "System\\CurrentControlSet\\Control\\Keyboard Layouts\\";

int i=0;

szID.Format("%d",i+1);

DWORD lpT=REG_SZ;

if(::RegOpenKey(HKEY_CURRENT_USER,szKeyName,&hKey)==ERROR_SUCCESS )

{

while(::RegQueryValueEx(hKey,szID,NULL,&lpT,(LPBYTE)LanguageId,&cp) == ERROR_SUCCESS )

{

CString szTempName;

szTempName = szKeyName1 + (LPCTSTR)(LPTSTR)LanguageId;

if(RegOpenKey(HKEY_LOCAL_MACHINE,szTempName,&hKey1)==ERROR_SUCCESS )

{

char szLanguageName[100];

memset(szLanguageName,0,100);

char szImeFileName[100];

memset(szImeFileName,0,100);

char szImeFileName_Layout[100];

memset(szImeFileName_Layout,0,100);

char Temp[100];

memset(Temp,0,100);

DWORD lpSLen=100;

if(RegQueryValueEx(hKey1,"Layout text",NULL,&lpT,(LPBYTE)szLanguageName,&lpSLen)==ERROR_SUCCESS)

{

                    strcpy(m_InputMethodList[i].szLanguageId,LanguageId);

                    strcpy(m_InputMethodList[i].szLanguageName,szLanguageName);    

}

//ImeFileName

lpSLen=100;

RegQueryValueEx(hKey1,"IME file",NULL,&lpT,(LPBYTE)szImeFileName,&lpSLen);

if (strlen(szImeFileName)>0)

{

strcpy(Temp,szImeFileName);

}

else

{

lpSLen=100;

RegQueryValueEx(hKey1,"Layout File",NULL,&lpT,(LPBYTE)szImeFileName_Layout,&lpSLen);

if (strlen(szImeFileName_Layout)>0)

{

strcpy(Temp,szImeFileName_Layout);

}

}

                strcpy(m_InputMethodList[i].szLanguageImeFileName,Temp);

//从IME的文件里取出16*16图标

HICON hSmallImeIcon[1];

int _ImeIconCount=ExtractIconEx(Temp,0,NULL,hSmallImeIcon,1);

if (_ImeIconCount==0)

{

hSmallImeIcon[0]=LoadIcon(AfxGetApp()->m_hInstance,(LPCTSTR)IDI_UnKnowInputMethodIcon);

}

                m_InputMethodList[i].hIcon=hSmallImeIcon[0];

}

::RegCloseKey(hKey1);

i++;

szID.Format("%d",i+1);

m_InputMethodCount=i;

}

}

::RegCloseKey(hKey);

2.通过编程方式切换输入法

HKL hkl=LoadKeyboardLayout(szLanguageId,KLF_ACTIVATE);
     ::PostMessage(::GetForegroundWindow(),WM_INPUTLANGCHANGEREQUEST,TRUE,(LPARAM)hkl);