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Avoid returning hardware messages if they have no chance to match the 

filter.
This commit is contained in:
Alexandre Julliard 2005-03-14 17:17:09 +00:00
parent c53d554b72
commit cf2f14212a
1 changed files with 20 additions and 1 deletions
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21
server/queue.c
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@ -38,6 +38,9 @@
#include "request.h"
#include "user.h"
#define WM_NCMOUSEFIRST WM_NCMOUSEMOVE
#define WM_NCMOUSELAST WM_NCMBUTTONDBLCLK
enum message_kind { SEND_MESSAGE, POST_MESSAGE };
#define NB_MSG_KINDS (POST_MESSAGE+1)
@ -324,6 +327,21 @@ inline static int is_keyboard_msg( struct message *msg )
return (msg->msg >= WM_KEYFIRST && msg->msg <= WM_KEYLAST);
}
/* check whether a message filter contains at least one potential hardware message */
inline static int filter_contains_hw_range( unsigned int first, unsigned int last )
{
/* hardware message ranges are (in numerical order):
* WM_NCMOUSEFIRST .. WM_NCMOUSELAST
* WM_KEYFIRST .. WM_KEYLAST
* WM_MOUSEFIRST .. WM_MOUSELAST
*/
if (last < WM_NCMOUSEFIRST) return 0;
if (first > WM_NCMOUSELAST && last < WM_KEYFIRST) return 0;
if (first > WM_KEYLAST && last < WM_MOUSEFIRST) return 0;
if (first > WM_MOUSELAST) return 0;
return 1;
}
/* get the QS_* bit corresponding to a given hardware message */
inline static int get_hardware_msg_bit( struct message *msg )
{
@ -1515,7 +1533,8 @@ DECL_HANDLER(get_message)
return;
/* then check for any raw hardware message */
if (get_hardware_message( current, req->get_next_hw, first_hw_msg, get_win, reply ))
if (filter_contains_hw_range( req->get_first, req->get_last ) &&
get_hardware_message( current, req->get_next_hw, first_hw_msg, get_win, reply ))
return;
/* now check for WM_PAINT */