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  4. selecting a device without UI

selecting a device without UI

Scheduled Pinned Locked Moved C / C++ / MFC
designhelpquestion
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  • V V_shr

    when I put camIndex , nonzero , it doesn't work , but windows recognizes both of webcams .

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    Justin Tay
    wrote on last edited by
    #18

    Um. Windows recognizes both webcams as in... they both have VFW drivers? Did you see the webcams listed in the listbox of this application?

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    • J Justin Tay

      Um. Windows recognizes both webcams as in... they both have VFW drivers? Did you see the webcams listed in the listbox of this application?

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      V_shr
      wrote on last edited by
      #19

      Yes I can choose between two webcams in windows UI dialog . but as mentioned above when I put the camIndex=1 it doesn't recognize it.

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      • V V_shr

        Yes I can choose between two webcams in windows UI dialog . but as mentioned above when I put the camIndex=1 it doesn't recognize it.

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        Justin Tay
        wrote on last edited by
        #20

        What windows UI dialog? Is it present in the SelCapDrvDlg in this application? Set a breakpoint in main.cpp line 199. What are the indexes of the 2 webcams you are interested in?

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        • J Justin Tay

          What windows UI dialog? Is it present in the SelCapDrvDlg in this application? Set a breakpoint in main.cpp line 199. What are the indexes of the 2 webcams you are interested in?

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          V_shr
          wrote on last edited by
          #21

          it reaches the breakpoint when i=0 and it doesn't reach in i=1

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          • V V_shr

            it reaches the breakpoint when i=0 and it doesn't reach in i=1

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            Justin Tay
            wrote on last edited by
            #22

            And there we have it. One of your webcams only has a WDM driver. You would have to write a DirectShow application.

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            • J Justin Tay

              And there we have it. One of your webcams only has a WDM driver. You would have to write a DirectShow application.

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              V_shr
              wrote on last edited by
              #23

              how can I write a DirectShow program , If you have time , please tell me . thank you

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              • V V_shr

                how can I write a DirectShow program , If you have time , please tell me . thank you

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                Justin Tay
                wrote on last edited by
                #24

                If you have VC7+, download and install the latest Platform SDK. Go to http://tmhare.mvps.org/downloads.htm[^] to get the project files for the samples since Microsoft has for some reason stripped it out. Then go have a look at the PlayCap sample application in "..\Program Files\Microsoft Platform SDK\Samples\Multimedia\DirectShow\Capture\PlayCap" If you have VC6 though, you would have to grab an old DirectX SDK, maybe 2003 or 2004.

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                • J Justin Tay

                  If you have VC7+, download and install the latest Platform SDK. Go to http://tmhare.mvps.org/downloads.htm[^] to get the project files for the samples since Microsoft has for some reason stripped it out. Then go have a look at the PlayCap sample application in "..\Program Files\Microsoft Platform SDK\Samples\Multimedia\DirectShow\Capture\PlayCap" If you have VC6 though, you would have to grab an old DirectX SDK, maybe 2003 or 2004.

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                  V_shr
                  wrote on last edited by
                  #25

                  what is VC7+ and SDK

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                  • V V_shr

                    how can I write a DirectShow program , If you have time , please tell me . thank you

                    J Offline
                    J Offline
                    Justin Tay
                    wrote on last edited by
                    #26

                    VC7+: Microsoft Visual C++ 2002/2003/2005 SDK: Software Development Kit http://www.microsoft.com/downloads/details.aspx?FamilyId=484269E2-3B89-47E3-8EB7-1F2BE6D7123A&displaylang=en[^]

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                    • J Justin Tay

                      VC7+: Microsoft Visual C++ 2002/2003/2005 SDK: Software Development Kit http://www.microsoft.com/downloads/details.aspx?FamilyId=484269E2-3B89-47E3-8EB7-1F2BE6D7123A&displaylang=en[^]

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                      V_shr
                      wrote on last edited by
                      #27

                      I dont Have visual C++ , I just have visual studio .NET and CBuilder And I prefer to write this program in CBuilder . -- modified at 10:09 Thursday 4th May, 2006

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                      • V V_shr

                        how can I write a DirectShow program , If you have time , please tell me . thank you

                        J Offline
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                        Justin Tay
                        wrote on last edited by
                        #28

                        Your copy of Visual Studio .NET doesn't come with the C++ compiler? I never used CBuilder before so I guess you're on your own in building/getting compatible libs. Here's a link to get you started. http://www.geocities.com/foetsch/borlibs/[^] http://clootie.narod.ru/cbuilder/index.html[^]

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                        • J Justin Tay

                          Your copy of Visual Studio .NET doesn't come with the C++ compiler? I never used CBuilder before so I guess you're on your own in building/getting compatible libs. Here's a link to get you started. http://www.geocities.com/foetsch/borlibs/[^] http://clootie.narod.ru/cbuilder/index.html[^]

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                          V_shr
                          wrote on last edited by
                          #29

                          thanks a lot

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