/// <summary>
/// Sets the drop description for the drag image manager.
/// </summary>
/// <param name="dataObject">The DataObject to set.</param>
/// <param name="dropDescription">The drop description.</param>
public static void SetDropDescription(this IDataObject dataObject, DropDescription dropDescription)
{
ComTypes.FORMATETC formatETC;
FillFormatETC(DropDescriptionFormat, TYMED.TYMED_HGLOBAL, out formatETC);
// We need to set the drop description as an HGLOBAL.
// Allocate space ...
IntPtr pDD = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DropDescription)));
try
{
// ... and marshal the data
Marshal.StructureToPtr(dropDescription, pDD, false);
// The medium wraps the HGLOBAL
System.Runtime.InteropServices.ComTypes.STGMEDIUM medium;
medium.pUnkForRelease = null;
medium.tymed = ComTypes.TYMED.TYMED_HGLOBAL;
medium.unionmember = pDD;
// Set the data
ComTypes.IDataObject dataObjectCOM = (ComTypes.IDataObject)dataObject;
dataObjectCOM.SetData(ref formatETC, ref medium, true);
}
catch
{
// If we failed, we need to free the HGLOBAL memory
Marshal.FreeHGlobal(pDD);
throw;
}
}
/// <summary>
/// Sets the drop description for the drag image manager.
/// </summary>
/// <param name="dataObject">The DataObject to set.</param>
/// <param name="dropDescription">The drop description.</param>
public static void SetDropDescription(IDataObject dataObject, DropDescription dropDescription)
{
FillFormatETC(DropDescriptionFormat, TYMED.TYMED_HGLOBAL, out FORMATETC formatETC);
// We need to set the drop description as an HGLOBAL.
// Allocate space ...
IntPtr pDD = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DropDescription)));
try
{
// ... and marshal the data
Marshal.StructureToPtr(dropDescription, pDD, false);
// The medium wraps the HGLOBAL
STGMEDIUM medium;
medium.pUnkForRelease = null;
medium.tymed = TYMED.TYMED_HGLOBAL;
medium.unionmember = pDD;
// Set the data
dataObject.SetData(ref formatETC, ref medium, true);
}
catch
{
// If we failed, we need to free the HGLOBAL memory
Marshal.FreeHGlobal(pDD);
throw;
}
}
/// <summary>
/// Sets the drop description for the drag image manager.
/// </summary>
/// <param name="dataObject">TheSome text DataObject to set.</param>
/// <param name="dropDescription">The drop description.</param>
public static void SetDropDescription(this IDataObject dataObject, DropDescription dropDescription)
{
ComTypes.FORMATETC formatETC;
FillFormatETC(DropDescriptionFormat, TYMED.TYMED_HGLOBAL, out formatETC);
// We need to set the drop description as an HSome textGLOBAL.
// Allocate space ...
IntPtr pDD = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DropDescription)));
try
{
// ... and marshal the data
Marshal.StructureToPtr(dropDescription, pDD, false);
// The medium wraps the HGLOBAL
System.Runtime.InteropServices.ComTypes.STGMEDIUM medium;
medium.pUnkForRelease = null;
medium.tymed = ComTypes.TYMED.TYMED_HGLOBAL;
medium.unionmember = pDD;
// Set the data
ComTypes.IDataObject dataObjectCOM = (ComTypes.IDataObject)dataObject;
dataObjectCOM.SetData(ref formatETC, ref medium, true);
}
catch
{
// If we failed, we need to free the HGLOBAL memory
Marshal.FreeHGlobal(pDD);
throw;
}
}
public static void SetDropDescription(System.Windows.IDataObject dataObject, DropDescription dropDescription)
{
FillFormatETC("DropDescription", TYMED.TYMED_HGLOBAL, out FORMATETC formatETC);
IntPtr num = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DropDescription)));
try
{
Marshal.StructureToPtr((object)dropDescription, num, false);
STGMEDIUM medium;
medium.pUnkForRelease = (object)null;
medium.tymed = TYMED.TYMED_HGLOBAL;
medium.unionmember = num;
((System.Runtime.InteropServices.ComTypes.IDataObject)dataObject).SetData(ref formatETC, ref medium, true);
}
catch
{
Marshal.FreeHGlobal(num);
throw;
}
if (dropDescription.szMessage != null)
{
SetBoolFormat(dataObject, "IsShowingText", true);
}
}
public static void SetDropDescription(this System.Windows.IDataObject dataObject, DropDescription dropDescription)
{
FORMATETC formatETC;
DataObjectExtensions.FillFormatETC("DropDescription", TYMED.TYMED_HGLOBAL, out formatETC);
IntPtr num = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(DropDescription)));
try
{
Marshal.StructureToPtr((object)dropDescription, num, false);
STGMEDIUM medium;
medium.pUnkForRelease = (object)null;
medium.tymed = TYMED.TYMED_HGLOBAL;
medium.unionmember = num;
((System.Runtime.InteropServices.ComTypes.IDataObject)dataObject).SetData(ref formatETC, ref medium, true);
}
catch
{
Marshal.FreeHGlobal(num);
throw;
}
if (dropDescription.szMessage == null)
return;
DataObjectExtensions.SetIsShowingText(dataObject, true);
}
