[PATCH 2/4] user32: Increase the default message buffer size.

Rémi Bernon rbernon at codeweavers.com
Wed Jan 12 09:28:51 CST 2022


The DS4 controllers are sending 563 bytes HID reports by default, this
translates to WM_INPUT messages larger than the default message size.

We would otherwise need an additional server roundtrip on each message,
and these devices are also known to be very verbose and continuously
send HID reports, so we really don't want it.

Signed-off-by: Rémi Bernon <rbernon at codeweavers.com>
---
 dlls/user32/message.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/user32/message.c b/dlls/user32/message.c
index d7dbc64d796..44b08da79dd 100644
--- a/dlls/user32/message.c
+++ b/dlls/user32/message.c
@@ -2665,7 +2665,7 @@ static int peek_message( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags,
     struct received_message_info info, *old_info;
     unsigned int hw_id = 0;  /* id of previous hardware message */
     void *buffer;
-    size_t buffer_size = 256;
+    size_t buffer_size = 1024;
 
     if (!(buffer = HeapAlloc( GetProcessHeap(), 0, buffer_size ))) return -1;
 
-- 
2.34.1




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