输入法编辑器（IME）-- 如何在DirectDraw下做中文输入 - Welcome to my blog -- Z...

#pragma comment ( lib, "imm32.lib" )
#include
#include
class CIme
{
bool g_bIme; //ime允许标志
char g_szCompStr[ MAX_PATH ]; //存储转换后的串
char g_szCompReadStr[ MAX_PATH ];//存储输入的串
char g_szCandList[ MAX_PATH ]; //存储整理成字符串选字表
int g_nImeCursor; //存储转换后的串中的光标位置
CANDIDATELIST *g_lpCandList; //存储标准的选字表
char g_szImeName[ 64 ]; //存储输入法的名字
bool g_bImeSharp; //全角标志
bool g_bImeSymbol; //中文标点标志
void ConvertCandList( CANDIDATELIST *pCandList, char *pszCandList ); //将选字表整理成串
public:
CIme() : g_lpCandList( NULL )
{
DisableIme();
}
//通过DisableIme初始化一些数据
~CIme()
{
DisableIme();
if( g_lpCandList )
{
GlobalFree( (HANDLE)g_lpCandList );
g_lpCandList = NULL;
}
}
//控制函数
void DisableIme(); //关闭并禁止输入法，如ime已经打开则关闭，此后玩家不能用热键呼出ime
void EnableIme(); //允许输入法，此后玩家可以用热键呼出ime
void NextIme(); //切换到下一种输入法，必须EnableIme后才有效
void SharpIme( HWND hWnd ); //切换全角/半角
void SymbolIme( HWND hWnd );//切换中/英文标点
//状态函数
char* GetImeName(); //得到输入法名字，如果当前是英文则返回NULL
bool IfImeSharp(); //是否全角
bool IfImeSymbol(); //是否中文标点
void GetImeInput( char **pszCompStr, char **pszCompReadStr, int *pnImeCursor, char **pszCandList );
//得到输入法状态，四个指针任意可为NULL则此状态不回返回
//在pszCompStr中返回转换后的串
//在pszCompReadStr中返回键盘直接输入的串
//在pnImeCursor中返回szCompStr的光标位置
//在pszCandList中返回选字表，每项之间以\t分隔
//必须在消息中调用的函数，如果返回是true，则窗口函数应直接返回0，否则应传递给DefWindowProc
bool OnWM_INPUTLANGCHANGEREQUEST();
bool OnWM_INPUTLANGCHANGE( HWND hWnd );
bool OnWM_IME_SETCONTEXT()
{
return true;
}
bool OnWM_IME_STARTCOMPOSITION()
{
return true;
}
bool OnWM_IME_ENDCOMPOSITION()
{
return true;
}
bool OnWM_IME_NOTIFY( HWND hWnd, WPARAM wParam );
bool OnWM_IME_COMPOSITION( HWND hWnd, LPARAM lParam );
};
void CIme:isableIme()
{
while( ImmIsIME( GetKeyboardLayout( 0 )))
ActivateKeyboardLayout(( HKL )HKL_NEXT, 0 );//如果ime打开通过循环切换到下一个关闭
g_bIme = false;
g_szCompStr[ 0 ] = 0;
g_szCompReadStr[ 0 ] = 0;
g_nImeCursor = 0;
g_szImeName[ 0 ] = 0;
g_szCandList[ 0 ] = 0;
}
void CIme::EnableIme()
{
g_bIme = true;
}
void CIme::NextIme()
{
if( !g_bIme )
return;
ActivateKeyboardLayout(( HKL )HKL_NEXT, 0 );
}
void CIme::SharpIme( HWND hWnd )
{
ImmSimulateHotKey( hWnd, IME_CHOTKEY_SHAPE_TOGGLE );
}
void CIme::SymbolIme( HWND hWnd )
{
ImmSimulateHotKey( hWnd, IME_CHOTKEY_SYMBOL_TOGGLE );
}
void CIme::ConvertCandList( CANDIDATELIST *pCandList, char *pszCandList ) //转换CandidateList到一个串，\t分隔每一项
{
unsigned int i;
if( pCandList->dwCount < pCandList->dwSelection )
{
pszCandList[ 0 ] = 0;
return;
}
//待选字序号超出总数，微软拼音第二次到选字表最后一页后再按PageDown会出现这种情况，并且会退出选字状态，开始一个新的输入
//但微软拼音自己的ime窗口可以解决这个问题，估计微软拼音实现了更多的接口，所以使用了这种不太标准的数据
//我现在无法解决这个问题，而且实际使用中也很少遇到这种事，而且其它标准输入法不会引起这种bug
//非标准输入法估计实现的接口比较少，所以应该也不会引起这种bug
for( i = 0; ( i < pCandList->dwCount - pCandList->dwSelection )&&( i < pCandList->dwPageSize ); i++ )
{
*pszCandList++ = ( i % 10 != 9 )? i % 10 + ‘1‘ : ‘0‘;//每项对应的数字键
*pszCandList++ = ‘.‘;//用‘.‘分隔
strcpy( pszCandList, (char*)pCandList + pCandList->dwOffset[ pCandList->dwSelection + i ] );//每项实际的内容
pszCandList += strlen( pszCandList );
*pszCandList++ = ‘\t‘;//项之间以‘\t‘分隔
}
*( pszCandList - 1 )= 0;//串尾，并覆盖最后一个‘\t‘
}
bool CIme::OnWM_INPUTLANGCHANGEREQUEST()
{
return !g_bIme;//如果禁止ime则返回false，此时窗口函数应返回0，否则DefWindowProc会打开输入法
}
bool CIme::OnWM_INPUTLANGCHANGE( HWND hWnd ) //ime改变
{
HKL hKL = GetKeyboardLayout( 0 );
if( ImmIsIME( hKL ))
{
HIMC hIMC = ImmGetContext( hWnd );
ImmEscape( hKL, hIMC, IME_ESC_IME_NAME, g_szImeName );//取得新输入法名字
DWORD dwConversion, dwSentence;
ImmGetConversionStatus( hIMC, &dwConversion, &dwSentence );
g_bImeSharp = ( dwConversion & IME_CMODE_FULLSHAPE )? true : false;//取得全角标志
g_bImeSymbol = ( dwConversion & IME_CMODE_SYMBOL )? true : false;//取得中文标点标志
ImmReleaseContext( hWnd, hIMC );
}
else//英文输入
g_szImeName[ 0 ] = 0;
return false;//总是返回false，因为需要窗口函数调用DefWindowProc继续处理
}
bool CIme::OnWM_IME_NOTIFY( HWND hWnd, WPARAM wParam )
{
HIMC hIMC;
DWORD dwSize;
DWORD dwConversion, dwSentence;
switch( wParam )
{
case IMN_SETCONVERSIONMODE:
//全角/半角，中/英文标点改变
hIMC = ImmGetContext( hWnd );
ImmGetConversionStatus( hIMC, &dwConversion, &dwSentence );
g_bImeSharp = ( dwConversion & IME_CMODE_FULLSHAPE )? true : false;
g_bImeSymbol = ( dwConversion & IME_CMODE_SYMBOL )? true : false;
ImmReleaseContext( hWnd, hIMC );
break;
case IMN_OPENCANDIDATE:
//进入选字状态
case IMN_CHANGECANDIDATE:
//选字表翻页
hIMC = ImmGetContext( hWnd );
if( g_lpCandList )
{
GlobalFree( (HANDLE)g_lpCandList );
g_lpCandList = NULL;
}
//释放以前的选字表
if( dwSize = ImmGetCandidateList( hIMC, 0, NULL, 0 ))
{
g_lpCandList = (LPCANDIDATELIST)GlobalAlloc( GPTR, dwSize );
if( g_lpCandList )
ImmGetCandidateList( hIMC, 0, g_lpCandList, dwSize );
}
//得到新的选字表
ImmReleaseContext( hWnd, hIMC );
if( g_lpCandList )ConvertCandList( g_lpCandList, g_szCandList );//选字表整理成串
break;
case IMN_CLOSECANDIDATE:
//关闭选字表
if( g_lpCandList )
{
GlobalFree( (HANDLE)g_lpCandList );
g_lpCandList = NULL;
}
//释放
g_szCandList[ 0 ] = 0;
break;
}
return true;//总是返回true，防止ime窗口打开
}
bool CIme::OnWM_IME_COMPOSITION( HWND hWnd, LPARAM lParam ) //输入改变
{
HIMC hIMC;
DWORD dwSize;
hIMC = ImmGetContext( hWnd );
if( lParam & GCS_COMPSTR )
{
dwSize = ImmGetCompositionString( hIMC, GCS_COMPSTR, (void*)g_szCompStr, sizeof( g_szCompStr ));
g_szCompStr[ dwSize ] = 0;
}
//取得szCompStr
if( lParam & GCS_COMPREADSTR )
{
dwSize = ImmGetCompositionString( hIMC, GCS_COMPREADSTR, (void*)g_szCompReadStr, sizeof( g_szCompReadStr ));
g_szCompReadStr[ dwSize ] = 0;
}
//取得szCompReadStr
if( lParam & GCS_CURSORPOS )
{
g_nImeCursor = 0xffff & ImmGetCompositionString( hIMC, GCS_CURSORPOS, NULL, 0 );
}
//取得nImeCursor
if( lParam & GCS_RESULTSTR )
{
unsigned char str[ MAX_PATH ];
dwSize = ImmGetCompositionString( hIMC, GCS_RESULTSTR, (void*)str, sizeof( str ));//取得汉字输入串
str[ dwSize ] = 0;
unsigned char *p = str;
while( *p )PostMessage( hWnd, WM_CHAR, (WPARAM)(*p++), 1 );//转成WM_CHAR消息
}
ImmReleaseContext( hWnd, hIMC );
return true;//总是返回true，防止ime窗口打开
}
char* CIme::GetImeName()
{
return g_szImeName[ 0 ]? g_szImeName : NULL;
}
bool CIme::IfImeSharp() //是否全角
{
return g_bImeSharp;
}
bool CIme::IfImeSymbol() //是否中文标点
{
return g_bImeSymbol;
}
void CIme::GetImeInput( char **pszCompStr, char **pszCompReadStr, int *pnImeCursor, char **pszCandList )
{
if( pszCompStr )
*pszCompStr = g_szCompStr;
if( pszCompReadStr )
*pszCompReadStr = g_szCompReadStr;
if( pnImeCursor )
*pnImeCursor = g_nImeCursor;
if( pszCandList )
*pszCandList = g_szCandList;
}
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