在RichEdit中实现超链接
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2019-06-13

在RichEdit中实现超链接

在RichEdit中实现超链接

首先在Form上安排一个RichEdit。

在窗体的结构函数中添加以下代码:

__fastcall TMainForm::TMainForm(TComponent* Owner)
     : TForm(Owner)
{
   unsigned mask = SendMessage(RichEdit1->Handle, EM_GETEVENTMASK, 0, 0);
   SendMessage(RichEdit1->Handle, EM_SETEVENTMASK, 0, mask | ENM_LINK);
   SendMessage(RichEdit1->Handle, EM_AUTOURLDETECT, true, 0); //自动检测URL
   RichEdit1->Text = "接待会见C++ Builder\n"
            "网址: http://www.ccrun.com\n"
            "偶的信箱:\n"
            "mailto::[email protected] \n"
            "嘿嘿\n";
}

重载窗体的WndProc

1。在.h中添加:

protected:

virtual void __fastcall WndProc(Messages::TMessage &Message);

2。在.cpp中添加:

//---------------------------------------------------------------------------
void __fastcall TMainForm::WndProc(Messages::TMessage &Message)
{
   if (Message.Msg == WM_NOTIFY)
   {
     if (((LPNMHDR)Message.LParam)->code == EN_LINK)
     {
       ENLINK* p = (ENLINK *)Message.LParam;
       if (p->msg == WM_LBUTTONDOWN)
       {
         SendMessage(RichEdit1->Handle, EM_EXSETSEL, 0, (LPARAM)&(p->chrg));
         ShellExecute(Handle, "open", RichEdit1->SelText.c_str(), 0, 0, SW_SHOWNORMAL);
       }
     }
   }
   TForm::WndProc(Message);
}

以上代码均已测试通过。

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