Avoid rapid-fire resize events during NT opaque drags

git-svn-id: svn://svn.tartarus.org/sgt/putty@617 cda61777-01e9-0310-a592-d414129be87e

diff --git a/window.c b/window.c
index 9a36562..6dba5b1 100644 (file)
--- a/window.c
+++ b/window.c
@@ -944,6 +944,7 @@ static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
     static int ignore_clip = FALSE;
     static int ignore_keymenu = TRUE;
     static int just_reconfigged = FALSE;
+    static int resizing = FALSE;
 
     switch (message) {
       case WM_TIMER:
@@ -1250,9 +1251,12 @@ static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
        break;
       case WM_ENTERSIZEMOVE:
         EnableSizeTip(1);
+        resizing = TRUE;
         break;
       case WM_EXITSIZEMOVE:
         EnableSizeTip(0);
+        resizing = FALSE;
+        back->size();
         break;
       case WM_SIZING:
        {
@@ -1321,7 +1325,13 @@ static LRESULT CALLBACK WndProc (HWND hwnd, UINT message,
            if (w != cols || h != rows || just_reconfigged) {
                term_invalidate();
                term_size (h, w, cfg.savelines);
-               back->size();
+                /*
+                 * Don't call back->size in mid-resize. (To prevent
+                 * massive numbers of resize events getting sent
+                 * down the connection during an NT opaque drag.)
+                 */
+                if (!resizing)
+                    back->size();
                just_reconfigged = FALSE;
            }
        }