win32 compatibility

README.rst

@@ -16,7 +16,8 @@ Optional:
 
 Supported platform:
  - linux
- - (others need to test: such as win32, cygwin, darwin, bsd, ...)
+ - win32
+ - (others need to test: such as cygwin, darwin, bsd, ...)
 
 Feature:
  - | configurable full keyboard control

src/ssiv/constants.py

@@ -25,7 +25,7 @@ version_info=(0,0,0)
 required_pyver=(3,11,0)
 
 # TODO: test on different platform
-supported_platform=('linux',)
+supported_platform=('linux','win32')
 
 # for SDL 2.26.0
 required_pysdl2ver=(0,9,15)

src/ssiv/mainloop.py

@@ -15,7 +15,12 @@
 
 from _thread import allocate_lock
 from functools import partial
-from signal import SIG_IGN,SIGINT,SIGTERM,SIGUSR1,SIGUSR2,signal,strsignal
+from signal import SIG_IGN,SIGINT,SIGTERM,signal,strsignal
+
+try:
+    from signal import SIG_IGN,SIGINT,SIGTERM,SIGUSR1,SIGUSR2,signal,strsignal
+except ImportError:
+    SIGUSR1=SIGUSR2=None
 
 from .co import AttrDict
 from .config import *
@@ -89,8 +94,9 @@ def mainloop(*,images=(),containers=()):
     handler=partial(signal_close,ui=ui)
     signal(SIGINT,handler)
     signal(SIGTERM,handler)
-    signal(SIGUSR1,handler)
-    signal(SIGUSR2,handler)
+    if SIGUSR1 is not None:
+        signal(SIGUSR1,handler)
+        signal(SIGUSR2,handler)
 
     if images:
         command_listed(images,ui)