Access Violation error

Ok this time I'm using Borland C++ Builder and I got a small app to compile and link just fine but I get an access violation error when it is running. It happens when I call the DirectX function "IDirect3DDevice8::Clear" in my "Render()" function (See file below). Anyone know what's going wrong here?

Most likely you write to memory you don't own. I haven't looked at the code, but that's the most probable error.

This is an easy one =). Dont Render() when you get a WM_PAINT. Your problem is that when you call ShowWindow(), you havent initialized DX yet, and your Window Proc gets a WM_PAINT message, which calls Render(), and causes your error (Your D3D Device is invalid).

Never call Render() in this way. Instead, call it in a loop in your main program, each time you process messages. It should look something like this:

Code:

---

while(running)
{
  if(PeekMessage(hWnd, &msg, 0, 0, PM_REMOVE))
  {
    TranslateMessage(...);
    DispatchMessage(...);
  }
  Render();
}

---

Z.

Thanks a bunch! It works fine now :).