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Как копировать RTF текст в буффер обмена?
{
You have to dig into the Rich Text Format if you want to copy text to the
clipboard that has format information embedded. The application you paste
this text into has to understand RTF, or the formatting will not show up.
OK, the first step is to register a clipboard format for RTF, since this is
not a predefined format:
}
Var
CF_RTF : Word;
CF_RTF := RegisterClipboardFormat('Rich Text Format');
{
The format name has to appear as typed above, this is the name used by MS
Word for Windows and similar MS products.
NOTE: The Richedit Unit declares a constant CF_RTF, which is NOT the
clipboard format handle but the string you need to pass to RegisterClipboard
format! So you can place Richedit into your uses clause and change the line
above to
}
{
The next step is to build a RTF string with the embedded format information.
You will get a shock if you inspect the mess of RTF stuff W4W will put into
the clipboard if you copy just a few characters (the app below allows you to
inspect the clipboard), but you can get away with a lot less. The bare
minimum would be something like this (inserts an underlined 44444):
}
{
The correct balance of opening and closing braces is extremely important, one
mismatch and the target app will not be able to interpret the text
correctly. If you want to control the font used for the pasted text you need
to add a fonttable (the default font is Tms Rmn, not the active font in the
target app!). See example app below, testtext2. If you want more info, the
full RTF specs can be found on www.microsoft.com, a subset is also described
in the Windows help compiler docs (hcw.hlp, comes with Delphi).
}
procedure TForm1.FormCreate(Sender: TObject);
begin // register clipboard format rtf
CF_RTF := RegisterClipboardFormat('Rich Text Format');
if CF_RTF = 0then begin
ShowMessage('Unable to register the Rich Text clipboard format!');
Application.Terminate;
end;
BtnShowFormats.Click;
end;
// show clipboard formats procedure TForm1.BtnShowFormatsClick(Sender: TObject);
var
buf: array [0..60] of Char;
n: Integer;
fmt: Word;
Name: string[30];
begin
MemFormats.Clear;
for n := 0to Clipboard.FormatCount - 1do begin
fmt := Clipboard.Formats[n];
if GetClipboardFormatName(fmt, buf, Pred(SizeOf(buf))) <> 0then
MemFormats.Lines.Add(StrPas(buf))
else begin case fmt of 1: Name := 'CF_TEXT';
2: Name := 'CF_BITMAP';
3: Name := 'CF_METAFILEPICT';
4: Name := 'CF_SYLK';
5: Name := 'CF_DIF';
6: Name := 'CF_TIFF';
7: Name := 'CF_OEMTEXT';
8: Name := 'CF_DIB';
9: Name := 'CF_PALETTE';
10: Name := 'CF_PENDATA';
11: Name := 'CF_RIFF';
12: Name := 'CF_WAVE';
13: Name := 'CF_UNICODETEXT';
14: Name := 'CF_ENHMETAFILE';
15: Name := 'CF_HDROP (Win 95)';
16: Name := 'CF_LOCALE (Win 95)';
17: Name := 'CF_MAX (Win 95)';
$0080: Name := 'CF_OWNERDISPLAY';
$0081: Name := 'CF_DSPTEXT';
$0082: Name := 'CF_DSPBITMAP';
$0083: Name := 'CF_DSPMETAFILEPICT';
$008E: Name := 'CF_DSPENHMETAFILE';
$0200..$02FF: Name := 'private format';
$0300..$03FF: Name := 'GDI object';
else Name := 'unknown format';
end;
MemFormats.Lines.Add(Name);
end;
end;
end;
// get rtf code from clipboard procedure TForm1.BtnGetRTFClick(Sender: TObject);
var
MemHandle: THandle;
begin with Clipboard do begin
Open;
try if HasFormat(CF_RTF) then begin
MemHandle := GetAsHandle(CF_RTF);
MemExample.SetTextBuf(GlobalLock(MemHandle));
GlobalUnlock(MemHandle);
end else
MessageDlg('The clipboard contains no RTF text!',
mtError, [mbOK], 0);
finally
Close;
end;
end;
end;
// set rtf code to the clipboard procedure TForm1.BtnSetRTFClick(Sender: TObject);
const
testtext: PChar = '{\rtf1\ansi\pard\plain 12{\ul 44444}}';
testtext2: PChar = '{\rtf1\ansi' +
'\deff4\deflang1033{\fonttbl{\f4\froman\fcharset0\fprq2 Times New Roman;}}' +
'\pard\plain 12{\ul 44444}}';
flap: Boolean = False;
var
MemHandle: THandle;
rtfstring: PChar;
begin with Clipboard do begin if flap then
rtfstring := testtext2
else
rtfstring := testtext;
flap := not flap;
MemHandle := GlobalAlloc(GHND or GMEM_SHARE, StrLen(rtfstring) + 1);
if MemHandle <> 0then begin
StrCopy(GlobalLock(MemHandle), rtfstring);
GlobalUnlock(MemHandle);
Open;
try
AsText := '1244444';
SetAsHandle(CF_RTF, MemHandle);
finally
Close;
end;
end else
MessageDlg('Global Alloc failed!',
mtError, [mbOK], 0);
end;
end;