Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / WinForms / Managed / System / WinForms / ComponentModel / COM2Interop / COM2PropertyPageUITypeConverter.cs / 1305376 / COM2PropertyPageUITypeConverter.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Windows.Forms.ComponentModel.Com2Interop { using Microsoft.Win32; using System; using System.ComponentModel; using System.ComponentModel.Design; using System.Diagnostics; using System.Drawing; using System.Drawing.Design; using System.Runtime.InteropServices; using System.Windows.Forms.Design; ////// /// internal class Com2PropertyPageUITypeEditor : Com2ExtendedUITypeEditor, ICom2PropertyPageDisplayService { private Com2PropertyDescriptor propDesc; private Guid guid; public Com2PropertyPageUITypeEditor(Com2PropertyDescriptor pd, Guid guid, UITypeEditor baseEditor) : base(baseEditor){ propDesc = pd; this.guid = guid; } ////// /// Takes the value returned from valueAccess.getValue() and modifies or replaces /// the value, passing the result into valueAccess.setValue(). This is where /// an editor can launch a modal dialog or create a drop down editor to allow /// the user to modify the value. Host assistance in presenting UI to the user /// can be found through the valueAccess.getService function. /// public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value) { IntPtr hWndParent = UnsafeNativeMethods.GetFocus(); // Windows.GetForegroundWindow try { ICom2PropertyPageDisplayService propPageSvc = (ICom2PropertyPageDisplayService)provider.GetService(typeof(ICom2PropertyPageDisplayService)); if (propPageSvc == null) { propPageSvc = this; } object instance = context.Instance; if (!instance.GetType().IsArray) { instance = propDesc.TargetObject; if (instance is ICustomTypeDescriptor) { instance = ((ICustomTypeDescriptor)instance).GetPropertyOwner(propDesc); } } propPageSvc.ShowPropertyPage(propDesc.Name, instance, propDesc.DISPID, this.guid, hWndParent); } catch (Exception ex1) { if (provider != null) { IUIService uiSvc = (IUIService)provider.GetService(typeof(IUIService)); if (uiSvc != null){ uiSvc.ShowError(ex1, SR.GetString(SR.ErrorTypeConverterFailed)); } } } return value; } ////// /// Retrieves the editing style of the Edit method. If the method /// is not supported, this will return None. /// public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context) { return UITypeEditorEditStyle.Modal; } public unsafe void ShowPropertyPage(string title, object component, int dispid, Guid pageGuid, IntPtr parentHandle){ Guid[] guids = new Guid[]{pageGuid}; IntPtr guidsAddr = Marshal.UnsafeAddrOfPinnedArrayElement(guids, 0); object[] objs = component.GetType().IsArray ? (object[])component : new object[]{component}; int nObjs = objs.Length; IntPtr[] objAddrs = new IntPtr[nObjs]; try { for (int i=0; i < nObjs; i++) { objAddrs[i] = Marshal.GetIUnknownForObject(objs[i]); } fixed (IntPtr* pAddrs = objAddrs) { SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(null, parentHandle), 0, 0, title, nObjs, new HandleRef(null, (IntPtr)(long)pAddrs), 1, new HandleRef(null, guidsAddr), SafeNativeMethods.GetThreadLCID(), 0, IntPtr.Zero ); } } finally { for (int i=0; i < nObjs; i++) { if (objAddrs[i] != IntPtr.Zero) { Marshal.Release(objAddrs[i]); } } } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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