[glib] GModule win32: disable error dialog popup

[Philip Withnall <pwithnall src gnome org>]

commit 719edde63b1f4756c61c325e8457c7d033be8194
Author: Tom Schoonjans <Tom Schoonjans diamond ac uk>
Date:   Mon Jan 16 11:39:49 2017 +0530

    GModule win32: disable error dialog popup
    
    When loading a module on win32, a blocking error dialog pops up whenever
    the module could not be loaded. This is particularly annoying when
    module loading failure is a harmless and expected event...
    
    This patch temporarily disables these error dialogs from popping up.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=777308

 gmodule/gmodule-win32.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/gmodule/gmodule-win32.c b/gmodule/gmodule-win32.c
index 4f707b5..20459f3 100644
--- a/gmodule/gmodule-win32.c
+++ b/gmodule/gmodule-win32.c
@@ -70,6 +70,8 @@ _g_module_open (const gchar *file_name,
 {
   HINSTANCE handle;
   wchar_t *wfilename;
+  DWORD old_mode;
+  BOOL success;
 #ifdef G_WITH_CYGWIN
   gchar tmp[MAX_PATH];
 
@@ -78,7 +80,13 @@ _g_module_open (const gchar *file_name,
 #endif
   wfilename = g_utf8_to_utf16 (file_name, -1, NULL, NULL, NULL);
 
+  /* suppress error dialog */
+  success = SetThreadErrorMode (SEM_NOOPENFILEERRORBOX | SEM_FAILCRITICALERRORS, &old_mode);
+  if (!success)
+    set_error ("");
   handle = LoadLibraryW (wfilename);
+  if (success)
+    SetThreadErrorMode (old_mode, NULL);
   g_free (wfilename);
       
   if (!handle)