| public static GetFormat ( int id ) : System.Text.Format | ||
| id | int | |
| Résultat | System.Text.Format | |
private void PasteHandler(object sender, Forms.KeyEventArgs e)
{
if (e.Control && e.KeyCode == Keys.V)
{
richTextEditorBox.Paste(DataFormats.GetFormat(DataFormats.Text));
e.Handled = true;
}
}
public virtual string[] GetFormats(bool autoConvert)
{
Debug.Assert(innerData != null, "You must have an innerData on all DataObjects");
IEnumFORMATETC enumFORMATETC = null;
// Since we are only adding elements to the HashSet, the order will be preserved.
HashSet <string> distinctFormats = new HashSet <string>();
try
{
enumFORMATETC = innerData.EnumFormatEtc(DATADIR.DATADIR_GET);
}
catch
{
}
if (enumFORMATETC != null)
{
enumFORMATETC.Reset();
FORMATETC[] formatetc = new FORMATETC[] { new FORMATETC() };
int[] retrieved = new int[] { 1 };
while (retrieved[0] > 0)
{
retrieved[0] = 0;
try
{
enumFORMATETC.Next(1, formatetc, retrieved);
}
catch
{
}
if (retrieved[0] > 0)
{
string name = DataFormats.GetFormat(formatetc[0].cfFormat).Name;
if (autoConvert)
{
string[] mappedFormats = GetMappedFormats(name);
for (int i = 0; i < mappedFormats.Length; i++)
{
distinctFormats.Add(mappedFormats[i]);
}
}
else
{
distinctFormats.Add(name);
}
}
}
}
return(distinctFormats.ToArray());
}
public virtual string[] GetFormats(bool autoConvert)
{
Debug.Assert(innerData != null, "You must have an innerData on all DataObjects");
IEnumFORMATETC enumFORMATETC = null;
ArrayList formats = new ArrayList();
try
{
enumFORMATETC = innerData.EnumFormatEtc(DATADIR.DATADIR_GET);
}
catch
{
}
if (enumFORMATETC != null)
{
enumFORMATETC.Reset();
FORMATETC[] formatetc = new FORMATETC[] { new FORMATETC() };
int[] retrieved = new int[] { 1 };
while (retrieved[0] > 0)
{
retrieved[0] = 0;
try
{
enumFORMATETC.Next(1, formatetc, retrieved);
}
catch
{
}
if (retrieved[0] > 0)
{
string name = DataFormats.GetFormat(formatetc[0].cfFormat).Name;
if (autoConvert)
{
string[] mappedFormats = GetMappedFormats(name);
for (int i = 0; i < mappedFormats.Length; i++)
{
formats.Add(mappedFormats[i]);
}
}
else
{
formats.Add(name);
}
}
}
}
string[] temp = new string[formats.Count];
formats.CopyTo(temp, 0);
return(GetDistinctStrings(temp));
}
public FormatEnumerator(IDataObject parent, string[] formats)
{
Debug.WriteLineIf(CompModSwitches.DataObject.TraceVerbose, "FormatEnumerator: Constructed: " + parent.ToString() + ", string[]" + formats.Length.ToString(CultureInfo.InvariantCulture));
this.parent = parent;
this.formats.Clear();
if (formats != null)
{
if (parent is DataObject dataObject && dataObject.RestrictedFormats)
{
if (!Clipboard.IsFormatValid(formats))
{
throw new Security.SecurityException(SR.ClipboardSecurityException);
}
}
for (int i = 0; i < formats.Length; i++)
{
string format = formats[i];
FORMATETC temp = new FORMATETC
{
cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id)),
dwAspect = DVASPECT.DVASPECT_CONTENT,
ptd = IntPtr.Zero,
lindex = -1
};
if (format.Equals(DataFormats.Bitmap))
{
temp.tymed = TYMED.TYMED_GDI;
}
else if (format.Equals(DataFormats.Text) ||
format.Equals(DataFormats.UnicodeText) ||
format.Equals(DataFormats.StringFormat) ||
format.Equals(DataFormats.Rtf) ||
format.Equals(DataFormats.CommaSeparatedValue) ||
format.Equals(DataFormats.FileDrop) ||
format.Equals(CF_DEPRECATED_FILENAME) ||
format.Equals(CF_DEPRECATED_FILENAMEW))
{
temp.tymed = TYMED.TYMED_HGLOBAL;
}
else
{
temp.tymed = TYMED.TYMED_HGLOBAL;
}
if (temp.tymed != 0)
{
this.formats.Add(temp);
}
}
}
}
static XplatUI()
{
// Compose name with current domain id because on Win32 we register class name
// and name must be unique to process. If we load MWF into multiple appdomains
// and try to register same class name we fail.
default_class_name = "SWFClass" + System.Threading.Thread.GetDomainID().ToString();
if (RunningOnUnix)
{
//if (Environment.GetEnvironmentVariable ("not_supported_MONO_MWF_USE_NEW_X11_BACKEND") != null) {
// driver=XplatUIX11_new.GetInstance ();
//} else
if (Environment.GetEnvironmentVariable("MONO_MWF_MAC_FORCE_X11") != null)
{
driver = XplatUIX11.GetInstance();
}
else
{
IntPtr buf = Marshal.AllocHGlobal(8192);
// This is a hacktastic way of getting sysname from uname ()
if (uname(buf) != 0)
{
// WTF: We cannot run uname
driver = XplatUIX11.GetInstance();
}
else
{
string os = Marshal.PtrToStringAnsi(buf);
if (os == "Darwin")
{
driver = XplatUICarbon.GetInstance();
}
else
{
driver = XplatUIX11.GetInstance();
}
}
Marshal.FreeHGlobal(buf);
}
}
else
{
driver = XplatUIWin32.GetInstance();
}
driver.InitializeDriver();
// Initialize things that need to be done after the driver is ready
DataFormats.GetFormat(0);
// Signal that the Application loop can be run.
// This allows UIA to initialize a11y support for MWF
// before the main loop begins.
Application.FirePreRun();
}
internal static void SetDataObjectImpl(object data, bool copy)
{
IntPtr clipboard_handle;
XplatUI.ObjectToClipboard converter;
int native_format;
DataFormats.Format item_format;
converter = new XplatUI.ObjectToClipboard(ConvertToClipboardData);
clipboard_handle = XplatUI.ClipboardOpen(false);
XplatUI.ClipboardStore(clipboard_handle, null, 0, null); // Empty clipboard
native_format = -1;
if (data is IDataObject)
{
string[] formats;
IDataObject data_object = data as IDataObject;
formats = data_object.GetFormats();
for (int i = 0; i < formats.Length; i++)
{
item_format = DataFormats.GetFormat(formats[i]);
if ((item_format != null) && (item_format.Name != DataFormats.StringFormat))
{
native_format = item_format.Id;
}
object obj = data_object.GetData(formats [i]);
// this is used only by custom formats
if (IsDataSerializable(obj))
{
item_format.is_serializable = true;
}
XplatUI.ClipboardStore(clipboard_handle, obj, native_format, converter);
}
}
else
{
item_format = DataFormats.Format.Find(data.GetType().FullName);
if ((item_format != null) && (item_format.Name != DataFormats.StringFormat))
{
native_format = item_format.Id;
}
XplatUI.ClipboardStore(clipboard_handle, data, native_format, converter);
}
XplatUI.ClipboardClose(clipboard_handle);
}
/// <summary>
/// Sets managed data to a clipboard DataObject.
/// </summary>
/// <param name="dataObject">The DataObject to set the data on.</param>
/// <param name="format">The clipboard format.</param>
/// <param name="data">The data object.</param>
/// <remarks>
/// Because the underlying data store is not storing managed objects, but
/// unmanaged ones, this function provides intelligent conversion, allowing
/// you to set unmanaged data into the COM implemented IDataObject.</remarks>
public static void SetDataEx(this IDataObject dataObject, string format, object data)
{
DataFormats.Format dataFormat = DataFormats.GetFormat(format);
// Initialize the format structure
FORMATETC formatETC = new FORMATETC();
formatETC.cfFormat = (short)dataFormat.Id;
formatETC.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatETC.lindex = -1;
formatETC.ptd = IntPtr.Zero;
// Try to discover the TYMED from the format and data
TYMED tymed = GetCompatibleTymed(format, data);
// If a TYMED was found, we can use the system DataObject
// to convert our value for us.
if (tymed != TYMED.TYMED_NULL)
{
formatETC.tymed = tymed;
// Set data on an empty DataObject instance
DataObject conv = new DataObject();
conv.SetData(format, true, data);
// Now retrieve the data, using the COM interface.
// This will perform a managed to unmanaged conversion for us.
STGMEDIUM medium;
((ComIDataObject)conv).GetData(ref formatETC, out medium);
try
{
// Now set the data on our data object
((ComIDataObject)dataObject).SetData(ref formatETC, ref medium, true);
}
catch
{
// On exceptions, release the medium
ReleaseStgMedium(ref medium);
throw;
}
}
else
{
// Since we couldn't determine a TYMED, this data
// is likely custom managed data, and won't be used
// by unmanaged code, so we'll use our custom marshaling
// implemented by our COM IDataObject extensions.
ComDataObjectExtensions.SetManagedData((ComIDataObject)dataObject, format, data);
}
}
public void AddSource(int type, object source)
{
// Try to detect plain text, based on the old behaviour of XplatUIX11, which usually assigns
// -1 as the type when a string is stored in the Clipboard
if (source is string && (type == DataFormats.GetFormat(DataFormats.Text).Id || type == -1))
{
plain_text_source = source as string;
}
else if (source is Image)
{
image_source = source as Image;
}
source_data [type] = source;
}
internal static bool IsFormatValid(FORMATETC[] formats)
{
if ((formats == null) || (formats.Length > 4))
{
return(false);
}
for (int i = 0; i < formats.Length; i++)
{
short cfFormat = formats[i].cfFormat;
if (((cfFormat != 1) && (cfFormat != 13)) && ((cfFormat != DataFormats.GetFormat("System.String").Id) && (cfFormat != DataFormats.GetFormat("Csv").Id)))
{
return(false);
}
}
return(true);
}
internal static IDataObject GetDataObject(bool primary_selection)
{
DataObject clipboard;
IntPtr clipboard_handle;
int[] native_formats;
DataFormats.Format item_format;
object managed_clipboard_item;
XplatUI.ClipboardToObject converter;
converter = new XplatUI.ClipboardToObject(ConvertFromClipboardData);
clipboard_handle = XplatUI.ClipboardOpen(primary_selection);
native_formats = XplatUI.ClipboardAvailableFormats(clipboard_handle);
if (native_formats == null)
{
return(null); // Clipboard empty
}
// Build the IDataObject
clipboard = new DataObject();
for (int i = 0; i < native_formats.Length; i++)
{
// We might get a format we don't understand or know
item_format = DataFormats.GetFormat(native_formats[i]);
if (item_format != null)
{
managed_clipboard_item = XplatUI.ClipboardRetrieve(clipboard_handle, native_formats[i], converter);
if (managed_clipboard_item != null)
{
clipboard.SetData(item_format.Name, managed_clipboard_item);
// We don't handle 'bitmap' since it involves handles, so we'll equate it to dib
if (item_format.Name == DataFormats.Dib)
{
clipboard.SetData(DataFormats.Bitmap, managed_clipboard_item);
}
}
}
}
XplatUI.ClipboardClose(clipboard_handle);
return(clipboard);
}
private unsafe object GetDataFromOleIStream(string format)
{
FORMATETC formatetc = new FORMATETC();
STGMEDIUM medium = new STGMEDIUM();
formatetc.cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id));
formatetc.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatetc.lindex = -1;
formatetc.tymed = TYMED.TYMED_ISTREAM;
medium.tymed = TYMED.TYMED_ISTREAM;
// Limit the # of exceptions we may throw below.
if ((int)HRESULT.S_OK != QueryGetDataUnsafe(ref formatetc))
{
return(null);
}
try
{
innerData.GetData(ref formatetc, out medium);
}
catch
{
return(null);
}
if (medium.unionmember != IntPtr.Zero)
{
Ole32.IStream pStream = (Ole32.IStream)Marshal.GetObjectForIUnknown(medium.unionmember);
Marshal.Release(medium.unionmember);
pStream.Stat(out Ole32.STATSTG sstg, Ole32.STATFLAG.STATFLAG_DEFAULT);
IntPtr hglobal = Kernel32.GlobalAlloc(
Kernel32.GMEM.MOVEABLE | Kernel32.GMEM.DDESHARE | Kernel32.GMEM.ZEROINIT,
(uint)sstg.cbSize);
IntPtr ptr = Kernel32.GlobalLock(hglobal);
pStream.Read((byte *)ptr, (uint)sstg.cbSize, null);
Kernel32.GlobalUnlock(hglobal);
return(GetDataFromHGLOBAL(format, hglobal));
}
return(null);
}
static XplatUI()
{
#if XAMARINMAC
driver = XplatUICocoa.GetInstance();
#else
driver = XplatUIWin32.GetInstance();
#endif
driver.InitializeDriver();
// Initialize things that need to be done after the driver is ready
DataFormats.GetFormat(0);
// Signal that the Application loop can be run.
// This allows UIA to initialize a11y support for MWF
// before the main loop begins.
Application.FirePreRun();
}
public FormatEnumerator(IDataObject parent, string[] formats)
{
Debug.WriteLineIf(CompModSwitches.DataObject.TraceVerbose, $"FormatEnumerator: Constructed: {parent}, string[{(formats?.Length ?? 0)}]");
_parent = parent;
if (formats != null)
{
for (int i = 0; i < formats.Length; i++)
{
string format = formats[i];
FORMATETC temp = new FORMATETC
{
cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id)),
dwAspect = DVASPECT.DVASPECT_CONTENT,
ptd = IntPtr.Zero,
lindex = -1
};
if (format.Equals(DataFormats.Bitmap))
{
temp.tymed = TYMED.TYMED_GDI;
}
else if (format.Equals(DataFormats.Text) ||
format.Equals(DataFormats.UnicodeText) ||
format.Equals(DataFormats.StringFormat) ||
format.Equals(DataFormats.Rtf) ||
format.Equals(DataFormats.CommaSeparatedValue) ||
format.Equals(DataFormats.FileDrop) ||
format.Equals(CF_DEPRECATED_FILENAME) ||
format.Equals(CF_DEPRECATED_FILENAMEW))
{
temp.tymed = TYMED.TYMED_HGLOBAL;
}
else
{
temp.tymed = TYMED.TYMED_HGLOBAL;
}
_formats.Add(temp);
}
}
}
private bool GetDataPresentInner(string format)
{
Debug.Assert(_innerData is not null, "You must have an innerData on all DataObjects");
FORMATETC formatetc = new FORMATETC
{
cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id)),
dwAspect = DVASPECT.DVASPECT_CONTENT,
lindex = -1
};
for (int i = 0; i < s_allowedTymeds.Length; i++)
{
formatetc.tymed |= s_allowedTymeds[i];
}
int hr = QueryGetDataUnsafe(ref formatetc);
return(hr == (int)HRESULT.S_OK);
}
private void GetDataIntoOleStructs(ref FORMATETC formatetc,
ref STGMEDIUM medium)
{
if (GetTymedUseable(formatetc.tymed) && GetTymedUseable(medium.tymed))
{
string format = DataFormats.GetFormat(formatetc.cfFormat).Name;
if (GetDataPresent(format))
{
object data = GetData(format);
if ((formatetc.tymed & TYMED.TYMED_HGLOBAL) != 0)
{
HRESULT hr = SaveDataToHandle(data, format, ref medium);
if (hr.Failed())
{
Marshal.ThrowExceptionForHR((int)hr);
}
}
else if ((formatetc.tymed & TYMED.TYMED_GDI) != 0)
{
if (format.Equals(DataFormats.Bitmap) && data is Bitmap bm &&
bm != null)
{
// save bitmap
medium.unionmember = (IntPtr)GetCompatibleBitmap(bm);
}
}
else
{
Marshal.ThrowExceptionForHR((int)HRESULT.DV_E_TYMED);
}
}
else
{
Marshal.ThrowExceptionForHR((int)HRESULT.DV_E_FORMATETC);
}
}
else
{
Marshal.ThrowExceptionForHR((int)HRESULT.DV_E_TYMED);
}
}
/// <summary>
/// Uses HGLOBALs and retrieves the specified format from the bound IComDataObject.
/// </summary>
private object?GetDataFromOleHGLOBAL(string format, out bool done)
{
done = false;
Debug.Assert(_innerData is not null, "You must have an innerData on all DataObjects");
FORMATETC formatetc = new FORMATETC();
STGMEDIUM medium = new STGMEDIUM();
formatetc.cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id));
formatetc.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatetc.lindex = -1;
formatetc.tymed = TYMED.TYMED_HGLOBAL;
object?data = null;
if ((int)HRESULT.S_OK == QueryGetDataUnsafe(ref formatetc))
{
try
{
_innerData.GetData(ref formatetc, out medium);
if (medium.tymed == TYMED.TYMED_HGLOBAL && medium.unionmember != IntPtr.Zero)
{
data = GetDataFromHGLOBAL(format, medium.unionmember);
}
}
catch (RestrictedTypeDeserializationException)
{
done = true;
}
catch
{
}
finally
{
Ole32.ReleaseStgMedium(ref medium);
}
}
return(data);
}
internal static void SetDataObjectImpl(object data, bool copy)
{
var converter = new XplatUI.ObjectToClipboard(ConvertToClipboardData);
var clipboard_handle = XplatUI.ClipboardOpen(false);
XplatUI.ClipboardStore(clipboard_handle, null, 0, null, copy); // Empty clipboard
if (data is IDataObject idata)
{
XplatUI.ClipboardStore(clipboard_handle, idata, DataFormats.GetFormat(IDataObjectFormat).Id, converter, copy);
}
else
{
var format = DataFormats.Format.Find(data.GetType().FullName);
var id = (format != null) && (format.Name != DataFormats.StringFormat) ? format.Id : -1;
XplatUI.ClipboardStore(clipboard_handle, data, id, converter, copy);
}
XplatUI.ClipboardClose(clipboard_handle);
}
internal static bool IsFormatValid(FORMATETC[] formats)
{
Debug.Assert(formats != null, "Null returned from GetFormats");
if (formats.Length <= 4)
{
for (int i = 0; i < formats.Length; i++)
{
short format = formats[i].cfFormat;
if (format != NativeMethods.CF_TEXT &&
format != NativeMethods.CF_UNICODETEXT &&
format != DataFormats.GetFormat("System.String").Id&&
format != DataFormats.GetFormat("Csv").Id)
{
return(false);
}
}
return(true);
}
return(false);
}
//RichTextBox 插入图片
public void ShowInsertImageDlg()
{
OpenFileDialog OpenFileDialog1 = new OpenFileDialog();
OpenFileDialog1.Title = "Select Image";
OpenFileDialog1.Filter = "BMP File|*.BMP|JPEG File|*.JPG|GIF File|*.GIF|PNG File|*.PNG|ICO File|*.ICO|Image File|*.BMP;*.DIB;*.RLE;*.JPG;*.JPEG;*.JPE;*.JFIF;*.GIF;*.EMF;*.WMF;*.TIF;*.PNG;*.ICO|All File|*.*";
OpenFileDialog1.FilterIndex = 6;
if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
{
string strImagePath = OpenFileDialog1.FileName;
Image img;
img = Image.FromFile(strImagePath);
Clipboard.SetDataObject(img);
DataFormats.Format df;
df = DataFormats.GetFormat(DataFormats.Bitmap);
if (this.CanPaste(df))
{
this.Paste(df);
}
}
}
internal static IDataObject GetDataObject(bool primary_selection)
{
IDataObject data = null;
var clipboard_handle = XplatUI.ClipboardOpen(primary_selection);
var formats = XplatUI.ClipboardAvailableFormats(clipboard_handle);
if (formats != null)
{
var format = DataFormats.GetFormat(IDataObjectFormat).Id;
var converter = new XplatUI.ClipboardToObject(ConvertFromClipboardData);
if (XplatUI.ClipboardRetrieve(clipboard_handle, format, converter) is IDataObject idata)
{
data = idata;
}
}
XplatUI.ClipboardClose(clipboard_handle);
return(data ?? new DataObject());
}
internal IStream GetStream(System.Runtime.InteropServices.ComTypes.IDataObject cdata, int index)
{
var format = new FORMATETC
{
cfFormat = (short)DataFormats.GetFormat(CFSTR_FILECONTENTS).Id,
dwAspect = DVASPECT.DVASPECT_CONTENT,
tymed = TYMED.TYMED_ISTREAM,
lindex = index
};
cdata.GetData(ref format, out STGMEDIUM medium);
if (medium.tymed == format.tymed)
{
if (Marshal.GetObjectForIUnknown(medium.unionmember) is IStream stream)
{
return(stream);
}
}
return(null);
}
int IComDataObject.QueryGetData(ref FORMATETC formatetc)
{
Debug.WriteLineIf(CompModSwitches.DataObject.TraceVerbose, "QueryGetData");
if (innerData is OleConverter)
{
return(((OleConverter)innerData).OleDataObject.QueryGetData(ref formatetc));
}
if (formatetc.dwAspect == DVASPECT.DVASPECT_CONTENT)
{
if (GetTymedUseable(formatetc.tymed))
{
if (formatetc.cfFormat == 0)
{
Debug.WriteLineIf(CompModSwitches.DataObject.TraceVerbose, "QueryGetData::returning S_FALSE because cfFormat == 0");
return((int)HRESULT.S_FALSE);
}
else if (!GetDataPresent(DataFormats.GetFormat(formatetc.cfFormat).Name))
{
return((int)HRESULT.DV_E_FORMATETC);
}
}
else
{
return((int)HRESULT.DV_E_TYMED);
}
}
else
{
return((int)HRESULT.DV_E_DVASPECT);
}
#if DEBUG
int format = unchecked ((ushort)formatetc.cfFormat);
Debug.WriteLineIf(CompModSwitches.DataObject.TraceVerbose, "QueryGetData::cfFormat " + format.ToString(CultureInfo.InvariantCulture) + " found");
#endif
return((int)HRESULT.S_OK);
}
/// <summary>
/// Uses IStream and retrieves the specified format from the bound IComDataObject.
/// </summary>
private unsafe object?GetDataFromOleIStream(string format)
{
FORMATETC formatetc = new FORMATETC();
STGMEDIUM medium = new STGMEDIUM();
formatetc.cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id));
formatetc.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatetc.lindex = -1;
formatetc.tymed = TYMED.TYMED_ISTREAM;
// Limit the # of exceptions we may throw below.
if ((int)HRESULT.S_OK != QueryGetDataUnsafe(ref formatetc))
{
return(null);
}
try
{
_innerData.GetData(ref formatetc, out medium);
}
catch
{
return(null);
}
Ole32.IStream?pStream = null;
IntPtr hglobal = IntPtr.Zero;
try
{
if (medium.tymed == TYMED.TYMED_ISTREAM && medium.unionmember != IntPtr.Zero)
{
pStream = (Ole32.IStream)Marshal.GetObjectForIUnknown(medium.unionmember);
pStream.Stat(out Ole32.STATSTG sstg, Ole32.STATFLAG.DEFAULT);
hglobal = Kernel32.GlobalAlloc(
Kernel32.GMEM.MOVEABLE | Kernel32.GMEM.DDESHARE | Kernel32.GMEM.ZEROINIT,
(uint)sstg.cbSize);
// not throwing here because the other out of memory condition on GlobalAlloc
// happens inside innerData.GetData and gets turned into a null return value
if (hglobal == IntPtr.Zero)
{
return(null);
}
IntPtr ptr = Kernel32.GlobalLock(hglobal);
pStream.Read((byte *)ptr, (uint)sstg.cbSize, null);
Kernel32.GlobalUnlock(hglobal);
return(GetDataFromHGLOBAL(format, hglobal));
}
return(null);
}
finally
{
if (hglobal != IntPtr.Zero)
{
Kernel32.GlobalFree(hglobal);
}
if (pStream is not null)
{
Marshal.ReleaseComObject(pStream);
}
Ole32.ReleaseStgMedium(ref medium);
}
}
/// <summary>
/// Retrieves the specified format data from the bound IComDataObject, from
/// other sources that IStream and HGLOBAL... this is really just a place
/// to put the "special" formats like BITMAP, ENHMF, etc.
/// </summary>
private object?GetDataFromOleOther(string format)
{
Debug.Assert(_innerData is not null, "You must have an innerData on all DataObjects");
FORMATETC formatetc = new FORMATETC();
STGMEDIUM medium = new STGMEDIUM();
TYMED tymed = (TYMED)0;
if (format.Equals(DataFormats.Bitmap))
{
tymed = TYMED.TYMED_GDI;
}
if (tymed == (TYMED)0)
{
return(null);
}
formatetc.cfFormat = unchecked ((short)(ushort)(DataFormats.GetFormat(format).Id));
formatetc.dwAspect = DVASPECT.DVASPECT_CONTENT;
formatetc.lindex = -1;
formatetc.tymed = tymed;
object?data = null;
if ((int)HRESULT.S_OK == QueryGetDataUnsafe(ref formatetc))
{
try
{
_innerData.GetData(ref formatetc, out medium);
}
catch
{
}
}
try
{
if (medium.tymed == TYMED.TYMED_GDI && medium.unionmember != IntPtr.Zero)
{
if (format.Equals(DataFormats.Bitmap))
{
// ASURT 140870 -- GDI+ doesn't own this HBITMAP, but we can't
// delete it while the object is still around. So we have to do the really expensive
// thing of cloning the image so we can release the HBITMAP.
// This bitmap is created by the com object which originally copied the bitmap to the
// clipboard. We call Add here, since DeleteObject calls Remove.
Image clipboardImage = Image.FromHbitmap(medium.unionmember);
if (clipboardImage is not null)
{
Image firstImage = clipboardImage;
clipboardImage = (Image)clipboardImage.Clone();
firstImage.Dispose();
}
data = clipboardImage;
}
}
}
finally
{
Ole32.ReleaseStgMedium(ref medium);
}
return(data);
}
public static void Main()
{
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Bitmap));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.CommaSeparatedValue));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Dib));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Dif));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.EnhancedMetafile));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.FileDrop));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Html));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Locale));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.MetafilePict));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.OemText));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Palette));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.PenData));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Riff));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Rtf));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Serializable));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.StringFormat));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.SymbolicLink));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Text));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.Tiff));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.UnicodeText));
PrintFormatInfo(DataFormats.GetFormat(DataFormats.WaveAudio));
// Add our own format
PrintFormatInfo(DataFormats.GetFormat("Birthday"));
// Test some basic stuff
DataObject dobj;
Control c;
string rtf;
c = new Control();
rtf = "\\r\\t\\f string";
// Load the data object
dobj = new DataObject(DataFormats.Text, "I am text");
dobj.SetData(c.GetType(), c);
dobj.SetData(DataFormats.Rtf, rtf);
PrintFormats("GetFormats(): ", dobj.GetFormats()); // Count should be 5
PrintFormats("GetFormats(true): ", dobj.GetFormats(true)); // Count should be 5
PrintFormats("GetFormats(false): ", dobj.GetFormats(false)); // Count should be 3
Console.WriteLine("GetDataPresent(typeof(string)): {0}", dobj.GetDataPresent(typeof(string))); // We expect true
Console.WriteLine("GetDataPresent(DataFormats.Text): {0}", dobj.GetDataPresent(DataFormats.Text)); // We expect true
Console.WriteLine("GetDataPresent(DataFormats.WaveAudio): {0}", dobj.GetDataPresent(DataFormats.WaveAudio)); // We expect false
Console.WriteLine("GetData(DataFormats.Rtf): {0}", dobj.GetData(DataFormats.Rtf)); // We expect "\r\t\f string"
clipboard clip = new clipboard();
PrintClipboardContents();
IDataObject data;
data = Clipboard.GetDataObject();
if (data != null && data.GetDataPresent(DataFormats.Bitmap))
{
image = (Image)Clipboard.GetDataObject().GetData(DataFormats.Bitmap);
}
Bitmap i = new Bitmap("test.bmp");
string s = "bummerä";
Clipboard.SetDataObject(s);
Application.Run(clip);
}
