capturing text information using a display driver

Discussion in 'Windows Vista Drivers' started by sachin, Sep 26, 2003.

  1. sachin

    sachin Guest

    I am using DrvTextOut to capture the text information. However,
    whenever I type anything on any editor I first get a DrvBitBlt which gives
    the co-ordiante of the entire client area of the editor as the destination
    surface and then only I get the DrvTextOut call. I want to know why the
    DrvBitBlt call comes in this case and not only the DrvTextOut call. Is there
    a way to distinguish this call from the DrvBitBlt which comes when there is
    actual change in the screen.

    sachin, Sep 26, 2003
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