Cannot edit or even read information about a RichEdit

[FelixMagi]

I added a RichEdit in my control:

HWND CreateRich(HWND hWnd, int X, int Y, int W, int H) {
  HWND hEl;
  HINSTANCE mHInstance=0;
  LoadLibrary("Riched20.dll");
  hEl=CreateWindow(RICHEDIT_CLASS, "",
        ES_MULTILINE | WS_VISIBLE | WS_CHILD | ES_READONLY, X, Y, W, H, hWnd, NULL, mHInstance, NULL);
  HFONT hfont = CreateFont(15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, "Arial");
  SendMessage(hEl,  WM_SETFONT, (WPARAM)hfont,  MAKELPARAM(FALSE,0));
  SendMessage(hEl, EM_SETBKGNDCOLOR, 0, RGB(15, 15, 15));
  SetFocus(hEl);
  return hEl;
}
.....
  hLogs=CreateInput((HWND)mPlug->GetGUI()->GetWindow(), x, y, w, h);

It seems that I cannot edit or even read information about a RichEdit outside of Draw().

The program crashes even if I call SendMessage(hLogs, EM_GETLINECOUNT, 0, 0); - very strange. Why is this happening ?

I need to edit this control outside of Draw()

How can I do this?

[FelixMagi]

I see

HFONT hfont = (HFONT)SendMessage((HWND)mPlug->GetGUI()->GetWindow(), WM_GETFONT, NULL, NULL);

crash the plugin as well, this means serious problems in the Windows API implementation.

[Tale]

Maybe mPlug or mPlug->GetGUI() is somehow NULL?

[FelixMagi]

    if (mPlug->GetGUI()!=NULL && mPlug->GetGUI()->GetWindow()!=NULL)
      SendMessage((HWND)mPlug->GetGUI()->GetWindow(), WM_GETFONT, NULL, NULL);

crash too

[SaschArt]

Works from anywhere, not just from the Draw(), but not from ProcessDoubleReplacing(). Check better here, you cannot call SendMessage() from ProcessDoubleReplacing.

[Tale]

Yeah, you should probably call this from the GUI thread. Here is seems to work fine if I call it from e.g. IControl::OnMouseDblClick(). Do note it seems to return NULL though.

[FelixMagi]

Originally Posted by SaschArt

Works from anywhere, not just from the Draw(), but not from ProcessDoubleReplacing(). Check better here, you cannot call SendMessage() from ProcessDoubleReplacing.

Indeed, that was it, problem solved