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NF:d3d9.IDirect3DDevice9.TestCooperativeLevel |
IDirect3DDevice9::TestCooperativeLevel (d3d9.h) |
The IDirect3DDevice9::TestCooperativeLevel method (d3d9.h) reports the current cooperative-level status of the Direct3D device for a windowed or full-screen application. |
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direct3d9\idirect3ddevice9__testcooperativelevel.htm |
direct3d9 |
VS|directx_sdk|~\idirect3ddevice9__testcooperativelevel.htm |
08/11/2022 |
613a6a7b-3b6f-b565-1f3a-2b5322844deb, IDirect3DDevice9 interface [Direct3D 9],TestCooperativeLevel method, IDirect3DDevice9.TestCooperativeLevel, IDirect3DDevice9::TestCooperativeLevel, TestCooperativeLevel, TestCooperativeLevel method [Direct3D 9], TestCooperativeLevel method [Direct3D 9],IDirect3DDevice9 interface, d3d9helper/IDirect3DDevice9::TestCooperativeLevel, direct3d9.idirect3ddevice9__testcooperativelevel |
d3d9.h |
D3D9.h |
Windows |
D3D9.lib |
Windows |
19H1 |
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Reports the current cooperative-level status of the Direct3D device for a windowed or full-screen application.
Type: HRESULT
If the method succeeds, the return value is D3D_OK, indicating that the device is operational and the calling application can continue. If the method fails, the return value can be one of the following values: D3DERR_DEVICELOST, D3DERR_DEVICENOTRESET, D3DERR_DRIVERINTERNALERROR.
If the device is lost but cannot be restored at the current time, IDirect3DDevice9::TestCooperativeLevel returns the D3DERR_DEVICELOST return code. This would be the case, for example, when a full-screen device has lost focus. If an application detects a lost device, it should pause and periodically call IDirect3DDevice9::TestCooperativeLevel until it receives a return value of D3DERR_DEVICENOTRESET. The application may then attempt to reset the device by calling IDirect3DDevice9::Reset and, if this succeeds, restore the necessary resources and resume normal operation. Note that IDirect3DDevice9::Present will return D3DERR_DEVICELOST if the device is either "lost" or "not reset".
A call to IDirect3DDevice9::TestCooperativeLevel will fail if called on a different thread than that used to create the device being reset.