I got this error for the 3rd part of the Begin Game Dev series:
Microsoft.DirectX.Direct3D.InvalidCallException was unhandled
Message="Error in the application."
after a day of head scratching and moving things about to see what effects they had I fixed it by moving this line of code:
device.VertexFormat = CustomVertex.PositionColored.Format;
to above this line:
device.DrawUserPrimitives(PrimitiveType.LineStrip, 6, CreateCrossHairVertexArrayTop());
rather than below the DrawUserPrimitives as I seemed to think whilst reading the tutorial
Everything else I did as told and I used Visual Studio Express with the SP1 and the Aug2006 Direct SDK and it seems to work fine.
I understand the issue as you have to define a pipeline before you draw the arrays?
PS Hello to everyone