mirror of http://192.168.1.51:8099/lmh188/twain3.0
127 lines
2.1 KiB
C++
127 lines
2.1 KiB
C++
#include "stdafx.h"
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#include "CTwainMutex.h"
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CTwainMutex::CTwainMutex(void)
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{
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m_hTwainMutex=NULL;
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m_bInited=FALSE;
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memset(m_sTwainMutex,0,sizeof(m_sTwainMutex));
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}
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CTwainMutex::~CTwainMutex(void)
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{
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if (m_hTwainMutex!=NULL)
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{
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CloseHandle(m_hTwainMutex);
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m_hTwainMutex=NULL;
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}
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}
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BOOL CTwainMutex::CreatTwainMutex(TCHAR *str_Mutex)
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{
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TCHAR mutexName[MAX_PATH]={0};
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DWORD error_code=0;
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HANDLE hMutex=NULL;
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BOOL b_ret=FALSE;
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if (m_hTwainMutex!=NULL)
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{
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return b_ret;
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}
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_tcscpy(mutexName,str_Mutex);
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hMutex=CreateMutex(NULL,FALSE,mutexName);
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if (hMutex!=NULL)
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{
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error_code=GetLastError();
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if (error_code==ERROR_ALREADY_EXISTS||error_code==ERROR_ACCESS_DENIED)
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{
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MessageBox(NULL, _T("设备已被其他程序占用，请关闭占用程序之后再重试！"), _T("提示"),MB_OK|MB_ICONWARNING);
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b_ret=CloseHandle(hMutex);
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if (!b_ret)
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{
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MessageBox(NULL, TEXT("资源释放异常"), 0, MB_ICONWARNING);
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}
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hMutex=NULL;
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return FALSE;
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}
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else
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{
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if (m_hTwainMutex!=NULL)
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{
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b_ret=CloseHandle(m_hTwainMutex);
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if (!b_ret)
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{
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return FALSE;
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}
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m_hTwainMutex=NULL;
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}
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m_hTwainMutex=hMutex;
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b_ret=TRUE;
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}
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return b_ret;
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}
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else
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{
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MessageBox(NULL, TEXT("程序初始化错误"), 0, MB_ICONWARNING);
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}
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return b_ret;
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}
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BOOL CTwainMutex::CheckExistTwainMutex(TCHAR* str_Mutex)
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{
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TCHAR szMutexName[MAX_PATH] = {0};
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DWORD error_code = 0;
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BOOL b_ret = FALSE;
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HANDLE hMutex = NULL;
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if (m_hTwainMutex!=NULL)
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{
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return TRUE;
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}
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_tcscpy(szMutexName,str_Mutex);
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hMutex=CreateMutex(NULL,FALSE,szMutexName);
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if (hMutex!=NULL)
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{
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error_code=GetLastError();
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if (error_code==ERROR_ALREADY_EXISTS||error_code==ERROR_ACCESS_DENIED)
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{
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b_ret=CloseHandle(hMutex);
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hMutex=NULL;
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b_ret=TRUE;
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return b_ret;
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}
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else
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{
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CloseHandle(hMutex);
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b_ret=FALSE;
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return b_ret;
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}
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}
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else
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{
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return TRUE;
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}
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return b_ret;
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}
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BOOL CTwainMutex::CloseTwainMutex()
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{
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BOOL b_ret=FALSE;
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if (m_hTwainMutex!=NULL)
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{
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b_ret=CloseHandle(m_hTwainMutex);
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if (!b_ret)
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{
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MessageBox(NULL, TEXT("资源释放失败"), 0, MB_ICONWARNING);
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}
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m_hTwainMutex=NULL;
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return b_ret;
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}
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return TRUE;
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}
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