Even further optimisation of the addformattag mechanism under windows by disabling events while we're applying formats.

1 files changed, 3 insertions, 0 deletions

diff --git a/iup/src/win/iupwin_text.c b/iup/src/win/iupwin_text.c
index 5264a85..ee6fbb7 100755
--- a/iup/src/win/iupwin_text.c
+++ b/iup/src/win/iupwin_text.c
@@ -1179,6 +1179,7 @@ void iupdrvTextAddFormatTag(Ihandle* ih, Ihandle* formattag)
   CHARFORMAT2 charformat;
   CHARRANGE oldRange;
   DWORD line0, line1;
+  int oldEventMask;
 
   /* one twip is 1/1440 inch */
   /* twip = (pixel*1440)/(pixel/inch) */
@@ -1215,6 +1216,7 @@ void iupdrvTextAddFormatTag(Ihandle* ih, Ihandle* formattag)
     }
   }
 
+  oldEventMask = SendMessage(ih->handle, EM_SETEVENTMASK, 0, 0);
   if (iupAttribGet(formattag, "FONTSCALE") && !iupAttribGet(formattag, "FONTSIZE"))
     iupAttribSetStr(formattag, "FONTSIZE", iupGetFontSizeAttrib(ih));
 
@@ -1230,6 +1232,7 @@ void iupdrvTextAddFormatTag(Ihandle* ih, Ihandle* formattag)
   SendMessage(ih->handle, EM_EXSETSEL, 0, (LPARAM)&oldRange);
   line1 = SendMessage(ih->handle, EM_GETFIRSTVISIBLELINE, 0, 0);
   SendMessage(ih->handle, EM_LINESCROLL, 0, line0 - line1);
+  SendMessage(ih->handle, EM_SETEVENTMASK, 0, oldEventMask);
 }
 
 static int winTextSetRemoveFormattingAttrib(Ihandle* ih, const char* value)