How to retrieve video hardware info

This is a discussion on How to retrieve video hardware info within the Windows Programming forums, part of the Platform Specific Boards category; Hello, I was hoping that someone could help me with a problem I have. How can I retrieve the size ...

  1. #1
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    How to retrieve video hardware info

    Hello, I was hoping that someone could help me with a problem I have. How can I retrieve the size of the total local video memory? I can't seem to find any api calls that do it. The directX calls I found return the local + nonlocal memory. Where does windows get this information from? When you go to display properties/settings/advanced/adapter, it tells you the memory size and vendor, that's exactly what I need to do. Any help is appreciated tremendously. Thanks.

  2. #2
    Banned master5001's Avatar
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    Windows actually pulls all of that info out of the registers. I was just looking at the registers and found info about my video card but no where does it list how much vram that I have. Did you already look through msdn? If not its worth a try.

  3. #3
    Guest Sebastiani's Avatar
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    Look up the Win32 Registry functions such as RegQueryValueEx().
    Code:
    if( numeric_limits< byte >::digits != bits_per_byte )
        error( "program requires bits_per_byte-bit bytes" );
    24bbs.cpp

  4. #4
    Guest Sebastiani's Avatar
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    Look up the Win32 Registry functions such as RegQueryValueEx().
    Code:
    if( numeric_limits< byte >::digits != bits_per_byte )
        error( "program requires bits_per_byte-bit bytes" );
    24bbs.cpp

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    Thanks for the suggestions, but I still couldn't get the video memory from the registry. Also, from what master5001 said, I couldn't depend on that information being in the registry. I had already searched MSDN, but never found anything. Any other ideas?

  6. #6
    Banned master5001's Avatar
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    It seems to me that the dx diagnostic tool determines the amount of video memory by filling it, and seeing how much memory it filled. Maybe you could do something like that.

  7. #7
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    USING MFC

    Try this

    Code:
    MEMORYSTATUS mem_stat;
    
    GlobalMemoryStatus( &mem_stat );
    
    /*
    typedef struct _MEMORYSTATUS { // mst 
        DWORD dwLength;        // sizeof(MEMORYSTATUS) 
        DWORD dwMemoryLoad;    // percent of memory in use 
        DWORD dwTotalPhys;     // bytes of physical memory 
        DWORD dwAvailPhys;     // free physical memory bytes 
        DWORD dwTotalPageFile; // bytes of paging file 
        DWORD dwAvailPageFile; // free bytes of paging file 
        DWORD dwTotalVirtual;  // user bytes of address space 
        DWORD dwAvailVirtual;  // free user bytes 
    } MEMORYSTATUS, *LPMEMORYSTATUS; 
    */
    zMan

  8. #8
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    remember to divide by 1024 to get them in Kilobytes...
    zMan

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