G
Gaz
Hi all,
I'm using a 3rd party Assembly that contains a method which returns
bitmap data, however the Return value type is IntPtr and I need to
convert it so I can access the Bitmap data:
I'm trying to use a Callback function:
public delegate My_RETURN STATE_CALLBACK(
IntPtr GuiStateCallbackCtx,
BioAPI_GUI_STATE GuiState,
BioAPI_GUI_RESPONSE Response,
BioAPI_GUI_MESSAGE Message,
BioAPI_GUI_PROGRESS Progress,
IntPtr SampleBuffer);
I can use this method and the CallBack function is executed but I'm
stuck as to how to convert the returned Samplebuffer IntPtr into the
GUI_BITMAP structures defined as below:
public class GUI_BITMAP
{
public uint Width;
public uint Height;
public GUI_DATA Bitmap;
}
public class GUI_DATA
{
public uint Length = 0;
public byte[] Data = null;
}
I'm very new to using C# having come from a Delphi background and am
struggling with converting/casting Pointer types to meaningful
structures.
If anyone could give me any help on this it would be much appreciated!
Thanks for your time,
Gareth
I'm using a 3rd party Assembly that contains a method which returns
bitmap data, however the Return value type is IntPtr and I need to
convert it so I can access the Bitmap data:
I'm trying to use a Callback function:
public delegate My_RETURN STATE_CALLBACK(
IntPtr GuiStateCallbackCtx,
BioAPI_GUI_STATE GuiState,
BioAPI_GUI_RESPONSE Response,
BioAPI_GUI_MESSAGE Message,
BioAPI_GUI_PROGRESS Progress,
IntPtr SampleBuffer);
I can use this method and the CallBack function is executed but I'm
stuck as to how to convert the returned Samplebuffer IntPtr into the
GUI_BITMAP structures defined as below:
public class GUI_BITMAP
{
public uint Width;
public uint Height;
public GUI_DATA Bitmap;
}
public class GUI_DATA
{
public uint Length = 0;
public byte[] Data = null;
}
I'm very new to using C# having come from a Delphi background and am
struggling with converting/casting Pointer types to meaningful
structures.
If anyone could give me any help on this it would be much appreciated!
Thanks for your time,
Gareth