Rich Edit "Ignoring" Messages?

[jlanza]

Hi I was beginning to work with a Rich Edit control in VS 2008. I am able to create the rich edit via CreateWindowEx, but something isn't working when I try to send it a message. The first test piece of code I was trying to write was a way to save everything that had been typed into the rich text.

void SaveBuffer(HWND hWnd)
{
GETTEXTLENGTHEX gtlxstruct;
gtlxstruct.codepage = 1200;
gtlxstruct.flags = GTL_NUMBYTES;

DWORD dwBufferSize = ::SendMessage(hWnd, EM_GETTEXTLENGTHEX, (WPARAM) &gtlxstruct, 0);

GETTEXTEX gettextexstruct;
gettextexstruct.cb = dwBufferSize;
gettextexstruct.codepage = 1200;
gettextexstruct.flags = GT_DEFAULT;
gettextexstruct.lpDefaultChar = NULL;
gettextexstruct.lpUsedDefChar = NULL;

char* pszSaveBuffer = new char[dwBufferSize + 1];
LRESULT lResult = ::SendMessage(hWnd, EM_GETTEXTEX, (WPARAM) &gettextexstruct, (LPARAM) pszSaveBuffer);

ofstream outfile(_T("new.txt"), ofstream::binary);
outfile.write(pszSaveBuffer, dwBufferSize + 1);

outfile.close();

delete [] pszSaveBuffer;
}

Both the dwBuffSize and lResult are 0. Even when I say assign 100 to dwBuffSize lResult is still 0. Could someone please help?

Thanks!

[olivthill]

Here is my solution in C.

   // Write file
   if ((fp = fopen(rtf_filename, "wb")) == NULL) {
      char info_msg[256];
      sprintf(info_msg, "Cannot open %s.\n", rtf_filename);
      MessageBox(hwnd, info_msg, "Error", 0);
      return(-4);
   }

   i9 = Edit_GetTextLength(hRTF);
   for (i = 0; i < i9; i++) {
      Edit_SetSel(hRTF, i, i+1);
      if (SendMessage(hRTF, (UINT) EM_GETSELTEXT, (WPARAM) 0, (LPARAM) s) > 0) {
         SendMessage(hRTF, EM_GETCHARFORMAT, SCF_SELECTION, (LPARAM) &cf);
         if (cf.dwEffects & CFM_BOLD)
            fwrite("<b>", 3, 1, fp);
         if (cf.dwEffects & CFM_ITALIC)
            fwrite("<i>", 3, 1, fp);
         if (cf.dwEffects & CFM_UNDERLINE)
            fwrite("<u>", 3, 1, fp);
         if (fputc((int)(s[0]), fp) <= 0) {
            char info_msg[256];
            sprintf(info_msg, "Cannot write in %s.\n", rtf_filename);
            MessageBox(hwnd, info_msg, "Error", 0);
            fclose(fp);
            return(-5);
         }
         if (s[0] == 0x0d) fputc((int)(0x0a), fp);
         if (cf.dwEffects & CFM_UNDERLINE)
            fwrite("</u>", 4, 1, fp);
         if (cf.dwEffects & CFM_ITALIC)
            fwrite("</i>", 4, 1, fp);
         if (cf.dwEffects & CFM_BOLD)
            fwrite("</b>", 4, 1, fp);
      }
   }
   Edit_SetSel(hRTF, 0, 0);

   fclose(fp);

N.B. Sometimes, there are functions named Edit_xxxx() which can be used instead of SendMessage().

[jlanza]

I tried using the Edit_GetTextLength macro like you said

DWORD dwBufferSize = Edit_GetTextLength(hWnd)

but that is still 0...

Any other suggestions?

[heteroy]

You are using the codepage for Unicode yet you use char instead of WCHAR in your code snippet. Are you sure you have the right code page?

[JohnCz]

jlanza,
Could you post a snippet of the code that you use to create edit control?