IOleComponentUIManager.ShowHelp Method

Articolo
05/06/2010

Requests the display of Help information.

Namespace: Microsoft.VisualStudio.Shell.Interop
Assembly: Microsoft.VisualStudio.Shell.Interop (in Microsoft.VisualStudio.Shell.Interop.dll)

Syntax

'Dichiarazione
Function ShowHelp ( _
    dwCompRole As UInteger, _
    ByRef rclsidComp As Guid, _
    posMouse As POINT, _
    dwHelpCmd As UInteger, _
    pszHelpFile As String, _
    dwData As UInteger _
) As Integer
'Utilizzo
Dim instance As IOleComponentUIManager
Dim dwCompRole As UInteger
Dim rclsidComp As Guid
Dim posMouse As POINT
Dim dwHelpCmd As UInteger
Dim pszHelpFile As String
Dim dwData As UInteger
Dim returnValue As Integer

returnValue = instance.ShowHelp(dwCompRole, _
    rclsidComp, posMouse, dwHelpCmd, _
    pszHelpFile, dwData)

int ShowHelp(
    uint dwCompRole,
    ref Guid rclsidComp,
    POINT posMouse,
    uint dwHelpCmd,
    string pszHelpFile,
    uint dwData
)

int ShowHelp(
    [InAttribute] unsigned int dwCompRole, 
    [InAttribute] Guid% rclsidComp, 
    [InAttribute] POINT posMouse, 
    [InAttribute] unsigned int dwHelpCmd, 
    [InAttribute] String^ pszHelpFile, 
    [InAttribute] unsigned int dwData
)

abstract ShowHelp : 
        dwCompRole:uint32 * 
        rclsidComp:Guid byref * 
        posMouse:POINT * 
        dwHelpCmd:uint32 * 
        pszHelpFile:string * 
        dwData:uint32 -> int

function ShowHelp(
    dwCompRole : uint, 
    rclsidComp : Guid, 
    posMouse : POINT, 
    dwHelpCmd : uint, 
    pszHelpFile : String, 
    dwData : uint
) : int

Parameters

dwCompRole
Type: System.UInt32
[in] Role of the VSPackage object requesting the Help display. For a list of valid dwCompRole values, see OLEROLE.

rclsidComp
Type: System.Guid%
[in] Class identifier (CLSID) of the VSPackage object requesting the Help display.

posMouse
Type: Microsoft.VisualStudio.OLE.Interop.POINT
[in] Identifies the position of the mouse.

dwHelpCmd
Type: System.UInt32
[in] Identifies the Help command to be invoked.

pszHelpFile
Type: System.String
[in] Points to the path to the Help file to be displayed.

dwData
Type: System.UInt32
[in] Data specific to the VSPackage object.

Return Value

Type: System.Int32
If the method succeeds, it returns S_OK. If it fails, it returns an error code.

Remarks

COM Signature

From oleipc.idl:

HRESULT IOleComponentUIManager::ShowHelp(
   [in] DWORD dwCompRole,
   [in] REFCLSID rclsidComp,
   [in] POINT posMouse,
   [in] DWORD dwHelpCmd,
   [in] LPOLESTR pszHelpFile,
   [in] DWORD dwData
);

ShowHelp calls the legacy SVsHelpService service. VSPackages can access a newer service for help by calling QueryService and requesting SID_SVsHelp and IID_Help. You are handed a pointer to the Help interface. Then call the method that displays help: DisplayTopicFromId.

.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.

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