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win32u: Don't enumerate mirrored monitor clones for GetSystemMetrics(SM_CMONITORS).

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Only one monitor in a mirrored monitor set contributes to the result of GetSystemMetrics(SM_CMONITORS).
Tested manually on Win7 and Win10.
This commit is contained in:
Zhiyi Zhang 2024-03-15 10:50:40 +08:00 committed by Alexandre Julliard
parent 6505403e58
commit 793e4640e4
1 changed files with 4 additions and 4 deletions
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8
dlls/win32u/sysparams.c
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@ -3348,15 +3348,15 @@ struct monitor_enum_info
RECT rect;
};
static unsigned int active_monitor_count(void)
static unsigned int active_unique_monitor_count(void)
{
struct monitor *monitor;
unsigned int count = 0;
LIST_FOR_EACH_ENTRY(monitor, &monitors, struct monitor, entry)
{
if (!is_monitor_active( monitor )) continue;
count++;
if (is_monitor_active( monitor ) && !monitor->is_clone)
count++;
}
return count;
}
@ -5941,7 +5941,7 @@ int get_system_metrics( int index )
return rect.bottom - rect.top;
case SM_CMONITORS:
if (!lock_display_devices()) return FALSE;
ret = active_monitor_count();
ret = active_unique_monitor_count();
unlock_display_devices();
return ret;
case SM_SAMEDISPLAYFORMAT: