{....}
protected
procedure wndproc(var message: tmessage); override;
{....}
uses richedit, shellapi;
{today i want to show how to implement url highlighting and url navigation
without any third-party components. this functionality is implemented in
richedit from microsoft (and ms outlook use this feature, for example) and
only borland's developers didn't publish it for us.}
procedure tform1.formcreate(sender: tobject);
var
mask: word;
begin
mask := sendmessage(richedit1.handle, em_geteventmask, 0, 0);
sendmessage(richedit1.handle, em_seteventmask, 0, mask or enm_link);
sendmessage(richedit1.handle, em_autourldetect, integer(true), 0);
//some text in richedit
richedit1.text := 'scalabium software'#13#10 +
' site is located at www.scalabium.com. welcome to our site.';
end;
procedure tform1.wndproc(var message: tmessage);
var
p: tenlink;
strurl: string;
begin
if (message.msg = wm_notify) then
begin
if (pnmhdr(message.lparam).code = en_link) then
begin
p := tenlink(pointer(twmnotify(message).nmhdr)^);
if (p.msg = wm_lbuttondown) then
begin
sendmessage(richedit1.handle, em_exsetsel, 0, longint(@(p.chrg)));
strurl := richedit1.seltext;
shellexecute(handle, 'open', pchar(strurl), 0, 0, sw_shownormal);
end
end
end;
inherited;
end;
autor: mike shkolnik
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