BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TMyRichEdit Hyperlink colors          BorlandTalk.com Forum Index -> C++ Builder (VCL Components Development) View previous topic :: View next topic   Author Message George P Boutwell Guest Posted: Fri Sep 12, 2003 7:18 pm    Post subject: TMyRichEdit Hyperlink colors Hello, I'm trying to write an quick little TRichEdit descendant that add hyperlink properties and features. I can't figure out an way to change the color of the hyperlink. I ideally, I'd like the hyperlink to change color when it's clicked. How do I change the color of the hyperlink in a RichEdit? Thanks, George Back to top Remy Lebeau (TeamB) Guest Posted: Fri Sep 12, 2003 8:02 pm    Post subject: Re: TMyRichEdit Hyperlink colors "George P Boutwell" <gboutwel (AT) netscape (DOT) net> wrote Quote: I'm trying to write an quick little TRichEdit descendant that add hyperlink properties and features. Why not just use a RichEdit v2.0 control? It has native support for URLs. Look at the following site for information on how to use RichEdit v2.0 (and v3.0) with BCB: http://home.att.net/~robertdunn/Yacs.html Quote: I can't figure out an way to change the color of the hyperlink. If you're going to stick with RichEdit v1.0 (what TRichEdit natively uses), then you'll just have to color the link the same way you color any text - highlight the text using the SelStart and SelLength properties, and then use the SelAttributes->Color property. Gambit --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system ([url]http://www.grisoft.com)[/url]. Version: 6.0.515 / Virus Database: 313 - Release Date: 9/1/03 Back to top George P Boutwell Guest Posted: Fri Sep 12, 2003 9:22 pm    Post subject: Re: TMyRichEdit Hyperlink colors Remy Lebeau (TeamB) wrote: Quote: Why not just use a RichEdit v2.0 control? It has native support for URLs. Look at the following site for information on how to use RichEdit v2.0 (and v3.0) with BCB: http://home.att.net/~robertdunn/Yacs.html Hmm... Is this all that's needed for me to add to my existing class to make it an 'RichEdit20" class? quote from above link: void __fastcall TRichEdit30::CreateParams(Controls::TCreateParams &Params) { const char RichEditModuleName[] = "RICHED20.DLL"; long int OldError; OldError = SetErrorMode(SEM_NOOPENFILEERRORBOX); FLibHandle = (int) LoadLibrary(RichEditModuleName); if (FLibHandle < HINSTANCE_ERROR) FLibHandle = 0; SetErrorMode(OldError); // TRichEdit::CreateParams(Params); TCustomMemo::CreateParams(Params); // CreateSubClass(Params, "RICHEDIT"); CreateSubClass(Params, RICHEDIT_CLASS); Params.Style = Params.Style | (HideScrollBars ? 0 : ES_DISABLENOSCROLL) | (HideSelection ? 0 : ES_NOHIDESEL); } Quote: I can't figure out an way to change the color of the hyperlink. If you're going to stick with RichEdit v1.0 (what TRichEdit natively uses), then you'll just have to color the link the same way you color any text - highlight the text using the SelStart and SelLength properties, and then use the SelAttributes->Color property. Maybe I missed something, but this appears not to work. Seems like it when I tried this, as soon as I made it an link, the color reverted back to blue... Thanks, George Back to top George P Boutwell Guest Posted: Fri Sep 12, 2003 9:39 pm    Post subject: Re: TMyRichEdit Hyperlink colors Remy, Mostly cause I'm not specifically wanting to work with URLs. I want to create an clickable word, that once that word is clicked something happens. I don't want what is clicked to have the form 'http://blah..blah..blah', or even 'file://blah..blah..blah' (ie. I want 'George jumps.' where 'jumps' is an hyperlink and when clicked it does something, and after that it then changes color). How do I change the color of the link in RichEdit v2.0 or RichEdit v3.0? I've been using RichEdit v2.0 API calls on my class and it appears to work. For instance, in MyRichEdit class: TCharFormat2A Hide; ::ZeroMemory(&Hide, sizeof(Hide)); Hide.cbSize = sizeof(Hide); Hide.dwMask = CFM_HIDDEN; Hide.dwEffects = CFE_HIDDEN; Perform(EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&Hide); According to MSDN [1], this is an v3.0 feature and not supported by 1.0 and it does seem to work, even with BCB's built-in class. Remy Lebeau (TeamB) wrote: Quote: Why not just use a RichEdit v2.0 control? It has native support for URLs. Look at the following site for information on how to use RichEdit v2.0 (and v3.0) with BCB: [1] http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/richedit/richeditcontrols/richeditcontrolreference/richeditstructures/charformat2.asp Back to top Remy Lebeau (TeamB) Guest Posted: Fri Sep 12, 2003 9:56 pm    Post subject: Re: TMyRichEdit Hyperlink colors "George P Boutwell" <gboutwel (AT) netscape (DOT) net> wrote Quote: Hmm... Is this all that's needed for me to add to my existing class to make it an 'RichEdit20" class? Why not just use Rob's premade component instead of making your own? Quote: Maybe I missed something, but this appears not to work. Seems like it when I tried this, as soon as I made it an link, the color reverted back to blue... That suggests that you are not actually using RichEdit v1.0 at all, but RichEdit v2.0/3.0 instead with their built-in URL detection. Gambit --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system ([url]http://www.grisoft.com)[/url]. Version: 6.0.515 / Virus Database: 313 - Release Date: 9/1/03 Back to top George P Boutwell Guest Posted: Fri Sep 12, 2003 10:16 pm    Post subject: Re: TMyRichEdit Hyperlink colors Remy Lebeau (TeamB) wrote: Quote: How do I change the color of the link in RichEdit v2.0 or RichEdit v3.0? Disable native link support and handle it manually like you would RichEdit v1.0. Which leads me back to my original question. How? Everything I try seems to not work. Quote: According to MSDN [1], this is an v3.0 feature and not supported by 1.0 and it does seem to work, even with BCB's built-in class. Which OS are you using? Newer OSes actually ship with v2.0 or v3.0 installed, which emulate v1.0 when appropriate. I'm using XP. We develop in house our own software and don't sell it to anyone else... So we can ensure that folks not running XP, 2k, etc still have v2 or v3 of RichEdit installed. 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