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PODirectX 9 C++ program crashes and wont re-open
 

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    <p>I am just beginning to learn how to program DirectX 9 applications in C++, so I'm still not very good, and I'm messing it around quite a bit.</p> <p>When I reopen the program after it crashes, the D3D Device fails to create with the result being <strong>D3DERR_INVALIDCALL</strong>. I am compiling with G++ in MinGW, using the DirectX August 2009 SDK. I'm guessing it's because I didnt release all the Devices and Textures etc when it crashes, and it still thinks I'm using them. It re-opens on a restart. Would someone be able to point me in the right direction as to how to sortof "reset" DirectX?</p> <p>Here is what I am using to create the device:</p> <pre><code>D3D = Direct3DCreate9(D3D_SDK_VERSION); D3DPRESENT_PARAMETERS D3DPP; ZeroMemory(&amp;D3DPP, sizeof(D3DPP)); D3DPP.Windowed = TRUE; D3DPP.SwapEffect = D3DSWAPEFFECT_DISCARD; D3DPP.hDeviceWindow = hWnd; D3DPP.BackBufferFormat = D3DFMT_X8R8G8B8; D3DPP.BackBufferWidth = WIDTH; D3DPP.BackBufferHeight = HEIGHT; D3DDevice = 0; //Null pointer to make sure I can check it HRESULT hr = D3D-&gt;CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL, hWnd, D3DCREATE_SOFTWARE_VERTEXPROCESSING, &amp;D3DPP, &amp;D3DDevice); if (!D3DDevice) { MessageBox(NULL,"Device could not be created","error",0); switch (hr) { case D3DERR_DEVICELOST: MessageBox(NULL,"1","error",0); break; case D3DERR_INVALIDCALL: MessageBox(NULL,"2","error",0); break; case D3DERR_NOTAVAILABLE: MessageBox(NULL,"3","error",0); break; case D3DERR_OUTOFVIDEOMEMORY: MessageBox(NULL,"4","error",0); break; }; return 1; }; return 0; </code></pre>
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