videoprogramming.txt

文件是用于 存储Windows视频信号的数据文件

void CVideoDlg::OnMciSendString()  
{  
DWORD mciError;  
char reply[BUF_SIZE];  
char mciErrorString[BUF_SIZE];  
UpdateData(TRUE);  
mciError = mciSendString(mCommandString,  
reply,BUF_SIZE,NULL);  
mciGetErrorString(mciError,mciErrorString,BU  
F_SIZE);  
mReturnString = reply;  
mErrorString = mciErrorString;  
UpdateData(FALSE);  
}  

void CVideoDlg::OnMciSendcommand()  
{  
MCI_OPEN_PARMS mciOpenParms;  
MCI_PLAY_PARMS mciPlayParms;  
int wDeviceID;  
DWORD mciError;  
char mciErrorString[BUF_SIZE];  
UpdateData(TRUE);  
mciOpenParms.dwCallback = 0L;  
mciOpenParms.wDeviceID = 0;  
mciOpenParms.lpstrDeviceType = "avivideo";  
mciOpenParms.lpstrElementName=(LPCSTR)m  
CommandString;  
mciError = mciSendCommand(0,MCI_OPEN,  
MCI_OPEN_TYPE|MCI_OPEN_ELEMENT,  
(DWORD)(LPVOID)&mciOpenParms);  
if (!mciError)  
{  
wDeviceID = mciOpenParms.wDeviceID;  
mciPlayParms.dwCallback = (DWORD)this-  
> m_hWnd;  
mciError = mciSendCommand(wDeviceID,  
MCI_PLAY,MCI_NOTIFY,(DWORD)(LPVOID)&  
mciPlayParms);  
}  

mciGetErrorString(mciError,mciErrorString,BU  
F_SIZE);  
mErrorString = mciErrorString;  
mReturnString = "";  
UpdateData(FALSE);  
return;  
}  
LONG CVideoDlg::OnMCINotify(UINT wParam,  
LONG lParam)  
{  
DWORD mciError;  
char mciErrorString[BUF_SIZE];  
mciError= iSendCommand(LOWORD(lParam),  
MCI_CLOSE,MCI_WAIT,NULL);  
mciGetErrorString(mciError,mciErrorString,BU  
F_SIZE);  
mErrorString = mciErrorString;  
UpdateData(FALSE);  
return 0;  
}  

void CVideoDlg::OnOpenMciwnd()  
{  
if (mVideoWnd==NULL)  
{  
UpdateData(TRUE);  
mVideoWnd = MCIWndCreate(this->m_hWnd,  
AfxGetInstanceHandle(),WS_CAPTION|WS_V  
ISIBLE|MCIWNDF_SHOWPOS|MCIWNDF_SHOW  
NAME,(LPCSTR)mCommandString);  
mErrorString = "";  
mReturnString = "";  
UpdateData(FALSE);  

SetDlgItemText(IDC_OPENMCIWND,"Close  
MCIWnd");  
}  
else  
{  
MCIWndDestroy(mVideoWnd);  
mVideoWnd = NULL;  
mErrorString = "";  
mReturnString = "";  
UpdateData(FALSE);  

SetDlgItemText(IDC_OPENMCIWND,"Open  
MCIWnd");  
}