各位前輩您好~我是BCB的初學者~想學一些有關於用DirectShow撥放影片的功能 請問一下，有關於DirectX 8SDK 裡頭的DirectShow Example... 也找了站內很多前輩的文章，目前DirectShow的範例已經可以LINK沒問題了 我是將下面main的函式內容拷貝到Button_Click事件裡頭~ 結果完全沒反應就結束了，但也確定有執行到..    因為我是初學所以還有蠻多方面不懂，請問各位先進以下這個範例要怎樣才能正確呢? 還是有些地方還需要設定或改的地方?    範例的原始檔案1 How To Play a File 影片路徑有換

#include 
void main(void)
{
    IGraphBuilder *pGraph;
    IMediaControl *pMediaControl;
    IMediaEvent   *pEvent;
    CoInitialize(NULL);
    
    // Create the filter graph manager and query for interfaces.
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, 
                        IID_IGraphBuilder, (void **)&pGraph);
    pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl);
    pGraph->QueryInterface(IID_IMediaEvent, (void **)&pEvent);        // Build the graph. IMPORTANT: Change string to a file on your system.
    pGraph->RenderFile(L"C:\\Example.avi", NULL);        // Run the graph.
    pMediaControl->Run();        // Wait for completion. 
    long evCode;
    pEvent->WaitForCompletion(INFINITE, &evCode);        // Clean up.
    pMediaControl->Release();
    pEvent->Release();
    pGraph->Release();
    CoUninitialize();
}     

在範例檔案2(下一個範例)Setting the Video Window 有加了兩行 pVidWin->put_Owner((OAHWND)g_hwnd); pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS); 是不是Handle的問題呢?

引言: 各位前輩您好~我是BCB的初學者~想學一些有關於用DirectShow撥放影片的功能 請問一下，有關於DirectX 8SDK 裡頭的DirectShow Example... 也找了站內很多前輩的文章，目前DirectShow的範例已經可以LINK沒問題了 我是將下面main的函式內容拷貝到Button_Click事件裡頭~ 結果完全沒反應就結束了，但也確定有執行到.. 因為我是初學所以還有蠻多方面不懂，請問各位先進以下這個範例要怎樣才能正確呢? 還是有些地方還需要設定或改的地方? 在範例檔案2(下一個範例)Setting the Video Window 有加了兩行 pVidWin->put_Owner((OAHWND)g_hwnd); pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS); 是不是Handle的問題呢?

這個程式,我有試過,不過這好像是給visual c 看的,我試了很久都不會動 因為他不知道要顯示在哪裡,沒有元件顯示。 如果不嫌麻煩的話,你可以下載DirectX 9的DSPACK,裡面Demos\BCB6\有一個 PlayWin的範例,跟你用的很類似，我試過可以用, 下載網址http://www.progdigy.com 但必須加裝directshow的元件。安裝方法可參考本站文章 http://delphi.ktop.com.tw/topic.php?TOPIC_ID=37755

謝謝板主回應 但因為公司的"裝備"只有 > 請問 class="code"> #include #include #define CLASSNAME "VideoWindow" IGraphBuilder *pGraph = NULL; IMediaControl *pMediaControl = NULL; IVideoWindow *pVidWin = NULL; HWND g_hwnd; void PlayFile(void) { // Create the filter graph manager. CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, IID_IGraphBuilder, (void **)&pGraph); pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl); pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin); // Build the graph. pGraph->RenderFile(L"Test.avi", NULL); //Set the video window. pVidWin->put_Owner((OAHWND)g_hwnd); pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS); RECT grc; GetClientRect(g_hwnd, &grc); pVidWin->SetWindowPosition(0, 0, grc.right, grc.bottom); // Run the graph. pMediaControl->Run(); } void CleanUp(void) { pVidWin->put_Visible(OAFALSE); pVidWin->put_Owner(NULL); pMediaControl->Release(); pVidWin->Release(); pGraph->Release(); } 這個範例有設定撥出視窗的hwnd，但執行可能會出錯~ 原因是他少了第一個範例的CoInitialize(NULL); 把它加進PlayFile的最上面就可以RUN囉~ 不過....一樣沒反應

     #include 
#include     #define CLASSNAME "VideoWindow"    IGraphBuilder   *pGraph = NULL;
IMediaControl   *pMediaControl = NULL;
IVideoWindow    *pVidWin = NULL;
HWND            g_hwnd;    void PlayFile(void)
{
    // Create the filter graph manager.
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, 
        IID_IGraphBuilder, (void **)&pGraph);
    pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl);
    pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin);        // Build the graph. 
    pGraph->RenderFile(L"Test.avi", NULL);        //Set the video window.
     g_hwnd=Form1->Handle; 
    pVidWin->put_Owner((OAHWND)g_hwnd);
    pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS);        RECT grc;
    GetClientRect(g_hwnd, &grc);
    pVidWin->SetWindowPosition(0, 0, grc.right, grc.bottom);        // Run the graph.
    pMediaControl->Run();
}    void CleanUp(void)
{
    pVidWin->put_Visible(OAFALSE);
    pVidWin->put_Owner(NULL);   
    pMediaControl->Release();
    pVidWin->Release();
    pGraph->Release();
}

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引言:

     #include 
#include     #define CLASSNAME "VideoWindow"    IGraphBuilder   *pGraph = NULL;
IMediaControl   *pMediaControl = NULL;
IVideoWindow    *pVidWin = NULL;
HWND            g_hwnd;    void PlayFile(void)
{
    // Create the filter graph manager.
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, 
        IID_IGraphBuilder, (void **)&pGraph);
    pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl);
    pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin);        // Build the graph. 
    pGraph->RenderFile(L"Test.avi", NULL);        //Set the video window.
     g_hwnd=Form1->Handle; 
    pVidWin->put_Owner((OAHWND)g_hwnd);
    pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS);        RECT grc;
    GetClientRect(g_hwnd, &grc);
    pVidWin->SetWindowPosition(0, 0, grc.right, grc.bottom);        // Run the graph.
    pMediaControl->Run();
}    void CleanUp(void)
{
    pVidWin->put_Visible(OAFALSE);
    pVidWin->put_Owner(NULL);   
    pMediaControl->Release();
    pVidWin->Release();
    pGraph->Release();
}

綠色這一行compiler會有問題,我現在是把他mark掉,在pVidWin->SetWindowPosition()這個涵數,自己填大小就可以work..ok! 我是用bcb6.0,只有加裝dspack,其他都沒裝,綠色這一行,要如何更改呢?

     #include 
#include     #define CLASSNAME "VideoWindow"    IGraphBuilder   *pGraph = NULL;
IMediaControl   *pMediaControl = NULL;
IVideoWindow    *pVidWin = NULL;
HWND            g_hwnd;    void PlayFile(void)
{
    // Create the filter graph manager.
    CoCreateInstance(CLSID_FilterGraph, NULL, CLSCTX_INPROC, 
        IID_IGraphBuilder, (void **)&pGraph);
    pGraph->QueryInterface(IID_IMediaControl, (void **)&pMediaControl);
    pGraph->QueryInterface(IID_IVideoWindow, (void **)&pVidWin);        // Build the graph. 
    pGraph->RenderFile(L"Test.avi", NULL);        //Set the video window.
     g_hwnd=Form1->Handle; 
    pVidWin->put_Owner((OAHWND)g_hwnd);
    pVidWin->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS);        TRECT grc;
    grc=Form1->ClientRect;        pVidWin->SetWindowPosition(0, 0, grc.right, grc.bottom);        // Run the graph.
    pMediaControl->Run();
}    void CleanUp(void)
{
    pVidWin->put_Visible(OAFALSE);
    pVidWin->put_Owner(NULL);   
    pMediaControl->Release();
    pVidWin->Release();
    pGraph->Release();
}

發表人 - cmf 於 2003/09/26 15:19:56

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嗯~~~原來這樣改,就可以囉 非常謝謝cmf^^

雖然還是RUN不出來~但也許是環境問題吧 我繼續慢慢試驗好了~ 感謝 >