LanguageService.QueryService(Guid, Guid, IntPtr) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Returns the request interface from the specified service.
public:
virtual int QueryService(Guid % guidService, Guid % iid, [Runtime::InteropServices::Out] IntPtr % obj);public virtual int QueryService (ref Guid guidService, ref Guid iid, out IntPtr obj);abstract member QueryService : Guid * Guid * nativeint -> int
override this.QueryService : Guid * Guid * nativeint -> intPublic Overridable Function QueryService (ByRef guidService As Guid, ByRef iid As Guid, ByRef obj As IntPtr) As IntegerParameters
- guidService
- Guid
[in] The GUID of the service to query.
- iid
- Guid
[in] The GUID of the desired interface.
- obj
-
IntPtr
nativeint
[out] An unmarshaled pointer to the interface.
Returns
If successful, returns S_OK; otherwise, returns an error code.
Implements
Examples
This example shows how to use this method to query for an interface and marshal the resulting pointer into an actual interface object.
IVsUIShell GetUIShell(Microsoft.VisualStudio.OLE.Interop.IServiceProvider pProvider)
{
IVsUIShell pUIShell = null;
IntPtr ptr = IntPtr.Zero;
pProvider.QueryService.(typeof(SVsUIShell).GUID,ptr);
if (ptr != IntPtr.Zero)
{
pUIShell = (IVsUIShell)Marshal.GetObjectForIUnknown(ptr);
}
return pUIShell;
}
Remarks
The base method calls Microsoft.VisualStudio.Package.LanguageService.GetService to obtain the IOleServiceProvider interface and passes the call on to its QueryService. This method is an implementation of QueryService.