BitmapEffect.CreateBitmapEffectOuter Method

Definition

Warning

This API is now obsolete.

对用于初始化自定义效果的 IMILBitmapEffect 对象创建句柄。Creates a handle to an IMILBitmapEffect object that is used to initialize a custom effect.

protected:
 static System::Runtime::InteropServices::SafeHandle ^ CreateBitmapEffectOuter();
[System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")]
protected static System.Runtime.InteropServices.SafeHandle CreateBitmapEffectOuter ();
[System.Security.SecurityCritical]
[System.Security.SecurityTreatAsSafe]
protected static System.Runtime.InteropServices.SafeHandle CreateBitmapEffectOuter ();
[System.Obsolete("BitmapEffects are deprecated and no longer function.  Consider using Effects where appropriate instead.")]
[System.Security.SecurityCritical]
[System.Security.SecurityTreatAsSafe]
protected static System.Runtime.InteropServices.SafeHandle CreateBitmapEffectOuter ();
static member CreateBitmapEffectOuter : unit -> System.Runtime.InteropServices.SafeHandle
Protected Shared Function CreateBitmapEffectOuter () As SafeHandle

Returns

SafeHandle

IMILBitmapEffect 对象的句柄。A handle to an IMILBitmapEffect object.

Attributes

Examples

下面的示例演示使用 CreateBitmapEffectOuter 方法检索包装效果对象的 CreateUnmanagedEffect 的实现。The following example shows an implementation of CreateUnmanagedEffect that uses the CreateBitmapEffectOuter method to retrieve a wrapper effect object.

[SecurityPermissionAttribute(SecurityAction.Demand, Flags = SecurityPermissionFlag.UnmanagedCode)]
unsafe protected override SafeHandle CreateUnmanagedEffect()
{
    const uint CLSCTX_INPROC_SERVER = 1;
    Guid IID_IUnknown = new Guid("00000000-0000-0000-C000-000000000046");
    Guid guidEffectCLSID = new Guid("84CF07CC-34C4-460f-B435-3184F5F2FF2A");
    SafeHandle wrapper = BitmapEffect.CreateBitmapEffectOuter();

    COMSafeHandle unmanagedEffect;
    uint hresult = Ole32Methods.CoCreateInstance(
                        ref guidEffectCLSID,
                        wrapper.DangerousGetHandle(),
                        CLSCTX_INPROC_SERVER,
                        ref IID_IUnknown,
                        out unmanagedEffect);
    InitializeBitmapEffect(wrapper, unmanagedEffect);
    if (0 == hresult) return wrapper;
    throw new Exception("Cannot instantiate effect. HRESULT = " + hresult.ToString());
}
<SecurityPermissionAttribute(SecurityAction.Demand, Flags := SecurityPermissionFlag.UnmanagedCode)>
Protected Overrides Function CreateUnmanagedEffect() As SafeHandle
    Const CLSCTX_INPROC_SERVER As UInteger = 1
    Dim IID_IUnknown As New Guid("00000000-0000-0000-C000-000000000046")
    Dim guidEffectCLSID As New Guid("84CF07CC-34C4-460f-B435-3184F5F2FF2A")
    Dim wrapper As SafeHandle = BitmapEffect.CreateBitmapEffectOuter()

    Dim unmanagedEffect As COMSafeHandle
    Dim hresult As UInteger = Ole32Methods.CoCreateInstance(guidEffectCLSID, wrapper.DangerousGetHandle(), CLSCTX_INPROC_SERVER, IID_IUnknown, unmanagedEffect)
    InitializeBitmapEffect(wrapper, unmanagedEffect)
    If 0 = hresult Then
        Return wrapper
    End If
    Throw New Exception("Cannot instantiate effect. HRESULT = " & hresult.ToString())
End Function

Remarks

与自定义效果的框架交互是通过IMILBitmapEffect对象来处理的。Framework interaction with custom effects is handled through an IMILBitmapEffect object. 使用自定义效果通过 InitializeBitmapEffect 方法初始化外部效果。The outer effect is initialized with the custom effect through the InitializeBitmapEffect method.

Applies to