Mega Code Archive
Copy HTML Text into the Clipboard
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Title: copy HTML Text into the Clipboard?
{
Ifyou'veevertriedstickinghtmlintotheclipboardusingtheusualCF_TEXT
formatthenyoumighthavebeendisappointedtodiscoverthatwysiwyghtml
editorspasteyourofferingasifitwerejusttext,
ratherthanrecognisingitashtml.ForthatyouneedtheCF_HTMLformat.
CF_HTMLisentirelytextformatandusesthetransformationformatUTF-8.
Itincludesadescription,acontext,andwithinthecontext,thefragment.
Asyoumayknowonecanplacemultipleitemsofdataontotheclipboardfor
asingleclipboardentry,whichmeansthatthesamedatacanbepastedina
varietyofdifferentformatsinordertocopewithtarget
applicationsofvaryingsophistocation.
ThefollowingexampleshowshowtostickCF_TEXT(andCF_HTML)
intotheclipboard.
}
{
Vielleichthastduschonmalprobiert,HTML-formatierterTextindie
ZwischenablagezukopierenmitdemgewhnlichenCF_TEXTFormat.
Wennmandannz.BinWord(Bearbeiten,InhalteEinfgen)auswhlt,
gibt'sdasHTMLFormatabernichtzurAuswahl.
Lsung:MitRegisterClipboardFormatdasFormatCF_HTMLregistrieren,
danneinenStringsoformatieren,wieesaufderMicrosoftSeitebeschrieben
ist(SieheLinkunten)undihndannmitderSetClipboardDataAPIin
dieZwischenablagekopieren.
DasfolgendeBeispielzeigt,wiemanzweiverschiedeneFormate(TextundHTML)
indieZwischenablageeinfgenkann.
}
functionFormatHTMLClipboardHeader(HTMLText:string):string;
const
CrLf=#13#10;
begin
Result:='Version:0.9'+CrLf;
Result:=Result+'StartHTML:-1'+CrLf;
Result:=Result+'EndHTML:-1'+CrLf;
Result:=Result+'StartFragment:000081'+CrLf;
Result:=Result+'EndFragment:'+CrLf;
Result:=Result+HTMLText+CrLf;
Result:=StringReplace(Result,'',Format('%.6d',[Length(Result)]),[]);
end;
//ThesecondparameterisoptionalandisputintotheclipboardasCF_HTML.
//FunctioncanbeusedstandaloneorinconjunctionwiththeVCLclipboardsolongas
//youusetheUSEVCLCLIPBOARDconditionaldefine
//($defineUSEVCLCLIPBOARD}
//(andclipboard.open,clipboard.close).
//Codefromhttp://www.lorriman.com
procedureCopyHTMLToClipBoard(conststr:string;consthtmlStr:string='');
var
gMem:HGLOBAL;
lp:PChar;
Strings:array[0..1]ofstring;
Formats:array[0..1]ofUINT;
i:Integer;
begin
gMem:=0;
{$IFNDEFUSEVCLCLIPBOARD}
Win32Check(OpenClipBoard(0));
{$ENDIF}
try
//mostdescriptivefirstasperapidocs
Strings[0]:=FormatHTMLClipboardHeader(htmlStr);
Strings[1]:=str;
Formats[0]:=RegisterClipboardFormat('HTMLFormat');
Formats[1]:=CF_TEXT;
{$IFNDEFUSEVCLCLIPBOARD}
Win32Check(EmptyClipBoard);
{$ENDIF}
fori:=0toHigh(Strings)do
begin
ifStrings[i]=''thenContinue;
//anextra"1"forthenullterminator
gMem:=GlobalAlloc(GMEM_DDESHARE+GMEM_MOVEABLE,Length(Strings[i])+1);
{Succeeded,nowreadthestreamcontentsintothememorythepointerpointsat}
try
Win32Check(gmem0);
lp:=GlobalLock(gMem);
Win32Check(lpnil);
CopyMemory(lp,PChar(Strings[i]),Length(Strings[i])+1);
finally
GlobalUnlock(gMem);
end;
Win32Check(gmem0);
SetClipboardData(Formats[i],gMEm);
Win32Check(gmem0);
gmem:=0;
end;
finally
{$IFNDEFUSEVCLCLIPBOARD}
Win32Check(CloseClipBoard);
{$ENDIF}
end;
end;
//Example:
procedureTForm1.Button1Click(Sender:TObject);
begin
CopyHTMLToClipBoard('SwissDelphiCenter','SwissDelphiCenter');
end;
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