1.剪切板
//保存到剪切板
if(OpenClipboard()){
EmptyClipboard();
CString str;
char* pBuf;
HANDLE handle;
GetDlgItemText(IDC_EDIT_SEND,str);//從一個EditBox中得到要要放置到剪切板上的數據
handle=GlobalAlloc(GMEM_MOVEABLE,str.GetLength()+1);//得到一個handle
pBuf=(char*)GlobalLock(handle);//用handle得到一個指針
strcpy(pBuf,str);
GlobalUnlock(handle);
SetClipboardData( CF_TEXT ,handle);
//關閉剪切板,不然其他的進程不能打開CloseClipboard();
}
//從剪切板得到數據
if(OpenClipboard()/*判斷是否打開剪切板*/)
{
CString str;
char* pBuf;
HANDLE handle;
handle=GetClipboardData(CF_TEXT);
pBuf=(char*)GlobalLock(handle);
GlobalUnlock(handle);
SetDlgItemText(IDC_EDIT_RECV,pBuf);
CloseClipboard();
}
2.匿名管道
//匿名管道只適用於父子進程之間的通信,在父進程中創建匿名管道,然後啓動子進程,用ReadFile()和WriteFile()實現信息的發送與接收
// ParentProcess
// OnCreatePipe
//先創建兩個HANDLE hRead
// HANDLE hWrite
{
SECURITY_ATTRIBUTES sa;
sa.bInheritHandle=TRUE;
sa.lpSecurityDescriptor=NULL;
sa.nLength=sizeof(SECURITY_ATTRIBUTES);
if(!CreatePipe(&hRead,&hWrite,&sa,0))
{
MessageBox("創建匿名管道失敗!");
return;
}
STARTUPINFO sui;
PROCESS_INFORMATION pi;
ZeroMemory(&sui,sizeof(STARTUPINFO));
sui.cb=sizeof(STARTUPINFO);
sui.dwFlags=STARTF_USESTDHANDLES;
sui.hStdInput=hRead;
sui.hStdOutput=hWrite;
sui.hStdError=GetStdHandle(STD_ERROR_HANDLE);
if(!CreateProcess("..\\Child\\Debug\\Child.exe",NULL,NULL,NULL,
TRUE,0,NULL,NULL,&sui,&pi))
{
CloseHandle(hRead);
CloseHandle(hWrite);
hRead=NULL;
hWrite=NULL;
MessageBox("創建子進程失敗!");
return;
}
else
{
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
}
}
OnPipeRead()
{
char buf[100];
DWORD dwRead;
if(!ReadFile(hRead,buf,100,&dwRead,NULL))
{
MessageBox("讀取數據失敗!");
return;
}
MessageBox(buf);
}
OnPipeWrite()
{
char buf[]="http://www.baidu.com";
DWORD dwWrite;
if(!WriteFile(hWrite,buf,strlen(buf)+1,&dwWrite,NULL))
{
MessageBox("寫入數據失敗!");
return;
}
}
//ChildProcess
在初始化中將輸入輸出句柄設置爲標準輸入輸出 hRead=GetStdHandle(STD_INPUT_HANDLE);
hWrite=GetStdHandle(STD_OUTPUT_HANDLE);
讀寫函數和父進程基本一樣;
3.命名管道
4.郵槽