explorer: Use debugstr_devmodew helper to trace display mode.

programs/explorer/desktop.c

@@ -918,29 +918,45 @@ static HMODULE load_graphics_driver( const WCHAR *driver, GUID *guid )
     return module;
 }
 
+static const char *debugstr_devmodew( const DEVMODEW *devmode )
+{
+    char position[32] = {0};
+
+    if (devmode->dmFields & DM_POSITION)
+    {
+        snprintf( position, sizeof(position), " at (%d,%d)",
+                 (int)devmode->dmPosition.x, (int)devmode->dmPosition.y );
+    }
+
+    return wine_dbg_sprintf( "%ux%u %ubits %uHz rotated %u degrees%s",
+                             (unsigned int)devmode->dmPelsWidth,
+                             (unsigned int)devmode->dmPelsHeight,
+                             (unsigned int)devmode->dmBitsPerPel,
+                             (unsigned int)devmode->dmDisplayFrequency,
+                             (unsigned int)devmode->dmDisplayOrientation * 90,
+                             position );
+}
+
 static void initialize_display_settings(void)
 {
     DISPLAY_DEVICEW ddW;
-    DEVMODEW dmW;
     DWORD i = 0;
 
     /* Store current display mode in the registry */
     ddW.cb = sizeof(ddW);
-    memset(&dmW, 0, sizeof(dmW));
-    dmW.dmSize = sizeof(dmW);
     while (EnumDisplayDevicesW( NULL, i++, &ddW, 0 ))
     {
-        if (!EnumDisplaySettingsExW( ddW.DeviceName, ENUM_CURRENT_SETTINGS, &dmW, 0))
+        DEVMODEW devmode = {.dmSize = sizeof(DEVMODEW)};
+
+        if (!EnumDisplaySettingsExW( ddW.DeviceName, ENUM_CURRENT_SETTINGS, &devmode, 0))
         {
             ERR( "Failed to query current display settings for %s.\n", debugstr_w(ddW.DeviceName) );
             continue;
         }
 
-        TRACE( "Device %s current display mode %lux%lu %luBits %luHz at %ld,%ld.\n",
-               debugstr_w( ddW.DeviceName ), dmW.dmPelsWidth, dmW.dmPelsHeight,
-               dmW.dmBitsPerPel, dmW.dmDisplayFrequency, dmW.dmPosition.x, dmW.dmPosition.y );
+        TRACE( "Device %s current display mode %s.\n", debugstr_w( ddW.DeviceName ), debugstr_devmodew( &devmode ) );
 
-        if (ChangeDisplaySettingsExW( ddW.DeviceName, &dmW, 0,
+        if (ChangeDisplaySettingsExW( ddW.DeviceName, &devmode, 0,
                                       CDS_GLOBAL | CDS_NORESET | CDS_UPDATEREGISTRY, 0 ))
             ERR( "Failed to initialize registry display settings for %s.\n", debugstr_w(ddW.DeviceName) );
     }