Device.TestCooperativeLevel Method
Reports the current cooperative-level status of the Direct3D device for a windowed or full-screen application.
Namespace: Microsoft.WindowsMobile.DirectX.Direct3D
Assembly: Microsoft.WindowsMobile.DirectX (in Microsoft.WindowsMobile.DirectX.dll)
Syntax
'Declaration
Public Sub TestCooperativeLevel
'Usage
Dim instance As Device
instance.TestCooperativeLevel()
public void TestCooperativeLevel()
public:
void TestCooperativeLevel()
public function TestCooperativeLevel()
Exceptions
| Exception | Condition |
|---|---|
| DeviceLostException | The device is lost but cannot be reset at this time. Therefore, rendering is not possible. |
| DeviceNotResetException | The device is lost but can be reset at this time. |
Remarks
If the device is lost and cannot be restored at the current time, TestCooperativeLevel throws a DeviceLostException. This is the case, for example, when a full-screen device loses focus. If an application detects a lost device, it should pause and periodically call TestCooperativeLevel until no exceptions are thrown. The application can then attempt to reset the device by calling Reset and, if this succeeds, restore the necessary resources and resume normal operation. Note that Present throws a DeviceLostException if the device is either "lost" or "not reset."
A call to TestCooperativeLevel fails if made on a thread other than the one used to create the device being reset.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.
Platforms
Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information
.NET Compact Framework
Supported in: 3.5, 2.0