【发布时间】:2015-01-15 05:23:18
【问题描述】:
我在基于对话框的 mfc 应用程序中嵌入了一个窗口媒体播放器 activex 控件。现在所有播放/暂停按钮都被禁用。我想启用它们。
正如我所说的put_uiMode(_T("mini"));
以及写这些行的时候
hr = m_spWMPPlayer->put_fullScreen(VARIANT_TRUE)
hr = m_spWMPPlayer->get_fullScreen(&b); // returned b = VARIANT_FALSE
b 的值将变为 FALSE。
可能是什么错误?有人知道吗?
谢谢
BOOL CLuminPlayerDlg::OnInitDialog()
{
CDialogEx::OnInitDialog();
CComPtr<IWMPPlayer> m_spWMPPlayer;
CComPtr<IWMPRemoteMediaServices> m_spServices;
CComPtr<IWMPControls> m_spControls;
// Set the icon for this dialog. The framework does this automatically
// when the application's main window is not a dialog
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
// TODO: Add extra initialization here
HRESULT hr = NULL;
if(SUCCEEDED(hr))
{
hr = CoCreateInstance(__uuidof(WindowsMediaPlayer), 0, CLSCTX_INPROC_SERVER, IID_IOleObject, (void**)&m_spServices);
if(SUCCEEDED(hr))
{
BSTR str = NULL;
VARIANT_BOOL b ;
hr = m_spServices->QueryInterface(__uuidof(IWMPPlayer), (void**)&m_spWMPPlayer);
if(SUCCEEDED(hr))
{
hr = m_spWMPPlayer->get_enabled(&b); // returned b= VARIANT_TRUE
hr = m_spWMPPlayer->get_enableContextMenu(&b); //returned b = VARIANT_TRUE
hr = m_spWMPPlayer->get_uiMode(&str); // returned str = L"full"
hr = m_spWMPPlayer->put_uiMode(_T("mini")); //hr = S_OK
hr = m_spWMPPlayer->get_uiMode(&str); // str = L"mini"
hr = m_spWMPPlayer->put_fullScreen(VARIANT_TRUE);
hr = m_spWMPPlayer->get_fullScreen(&b); // returned b = VARIANT_FALSE
hr = m_spWMPPlayer->put_URL(_T("C:\\Visual Studio 2012\\Projects\\Lumin-Player\\Debug\\abc.mp4")); //returned hr = S_OK
hr = m_spServices->QueryInterface(__uuidof(IWMPControls), (void**)&m_spControls); // returned hr = S_OK
if(SUCCEEDED(hr))
{
hr = m_spControls->play(); //returned hr = S_OK
}
}
}
}
return TRUE; // return TRUE unless you set the focus to a control
}
【问题讨论】:
标签: c++ com mfc activex windows-media-player