微博图床挂了……
借助 @晴兰 和 @yangff 大佬的 WndProc 总算实现了切换后台事件的监听，之前从第三方 Player 入手一直不成功，目测是加载 RGSSXXX.dll 后 WndProc 被接管了。
这样一来就可以处理 RM 默认切到后台后渲染暂停但 BGM 继续播放的情况，避免演出和音乐不同步。
原版 Audio 没有暂停，续播功能只支持 ogg 格式，需要使用第三方音乐引擎。
目前找到的有
代码：1
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185$apicache = {}
class String
def apicall(*args)
$apicache[self] = Win32API.new(*self.split("|")) unless $apicache.include? self
$apicache[self].call(*args)
end
end
class Symbol
def method_missing(*args, &block)
self.to_s.send(*args, &block)
end
end
class Win32API
WM_MOVE = 0x3
WM_MOVING = 0x216
WM_ACTIVATE = 0x6
WM_WINDOWPOSCHANGED = 0x47
WM_WINDOWPOSCHANGING = 0x46
end
module Roost
module MainWindow
def self.getwndproc
@wndproc
end
def self.setwndproc(obj)
@wndproc=obj
end
def self.addwndproc(obj)
@@wndprocs.push(obj)
end
@@wndprocs=[]
@wndproc = lambda {|hwnd, msg, wp, lp|
@@handle=false
for i in @@wndprocs
i.call(hwnd, msg, wp, lp)
end
return Roost::MainWindow.use_rm_proc(hwnd, msg, wp, lp)
}
def self.use_rm_proc(hwnd,msg,wp,lp)
if (not @@handle)
@@handle=true
return :"user32|CallWindowProc|iiiii|i".apicall(@@oHandle,hwnd,msg,wp,lp)
end
end
def self.disable_rm_proc
@@handle=true
end
def self.enable
Roost::MainWindow.instance_eval do
def self.enable
end
end
Roost::MainWindow.instance_eval do
@msg = "\0"*24
@hwnd = 0
while @hwnd==0
:"user32|GetMessage|piii|v".apicall(@msg, 0, 0, 0)
@kmsg = @msg
:"user32|TranslateMessage|p|v".apicall(@kmsg)
:"user32|DispatchMessage|p|v".apicall(@kmsg)
@hwnd = @msg.unpack("i*")[0]
end
@hdc = :"user32|GetDC|i|i".apicall(@hwnd)
def self.hwnd
return @hwnd
end
def self.hdc
return @hdc
end
def self.findProc(l, n)
lib = :"kernel32|LoadLibrary|p|i".apicall(l);
ret = :"kernel32|GetProcAddress|ip|l".apicall(lib, n);
:"kernel32|FreeLibrary|l|v".apicall(lib)
return ret
end
def self.loadfindProc(l, n)
lib = :"kernel32|LoadLibrary|p|i".apicall(l);
ret = :"kernel32|GetProcAddress|ip|l".apicall(lib, n);
return ret
end
def self.enableWndProc
Roost::MainWindow.instance_eval do
def self.enableWndProc
end
end
@malloc = :"msvcrt|malloc|i|i"
@memcpy = :"msvcrt|memcpy|ipi|v"
sprintf = self.findProc("msvcrt", "sprintf")
rgsseval = self.findProc("RGSS300", "RGSSGetInt")
old = :"user32|GetWindowLong|ll|l".apicall(@hwnd, -4)
buf = @malloc.apicall(1024)
fmt = @malloc.apicall(2048)
sprintfvar = @malloc.apicall(8)
rgssevalvar= @malloc.apicall(8)
oldvar = @malloc.apicall(8)
fmtvar = @malloc.apicall(8)
bufvar = @malloc.apicall(8)
defvar = @malloc.apicall(8)
:"msvcrt|strcpy|pp|p".apicall(fmt, "Roost::MainWindow.getwndproc.call(%d,%d,%d,%d)")
@memcpy.apicall(sprintfvar, [sprintf].pack("i"), 4)
@memcpy.apicall(rgssevalvar,[rgsseval].pack("i"), 4)
@memcpy.apicall(oldvar, [old].pack("i"), 4)
@memcpy.apicall(fmtvar, [fmt].pack("i"), 4)
@memcpy.apicall(bufvar, [buf].pack("i"), 4)
@memcpy.apicall(defvar, [self.findProc("user32", "DefWindowProcA")].pack("i"), 4)
@code = [0x55,0x89,0xe5,0xff,0x75,0x14,
0xff,0x75,0x10,0xff,0x75,0x0c,
0xff,0x75,0x08,0xff,0x35].pack('C*')
@code << [fmtvar].pack('l') << [0xff, 0x35].pack('C*')
@code << [bufvar].pack('l') << [0xff, 0x15].pack('C*')
@code << [sprintfvar].pack("l")
@code << [0xff, 0x15].pack('C*')
@code << [rgssevalvar].pack("l")
=begin
@code << [0x83,0xc4,0x18, 0xff, 0x75, 0x14,
0xff,0x75, 0x10, 0xff, 0x75, 0x0c,
0xff,0x75, 0x08, 0xff, 0x15].pack('C*')
@code << [oldvar].pack("l")
=end
@code << [0x83,0xc4,0x18].pack('C*')
@code << [0xc9,0xc2,0x10,0x00].pack('C*')
#0xD1, 0xE8
@shellcode = @malloc.apicall(2048)
@memcpy.apicall(@shellcode, @code, @code.size)
@@oHandle= :"user32|SetWindowLong|iii|i".apicall(@hwnd, -4, @shellcode)
#Returning Test : should be 5
#Roost::MainWindow.setwndproc (lambda{|hwnd, msg, wp, lp| 5})
#p :"user32|CallWindowProc|iiiii|i".apicall(@shellcode, 0, 0, 0, 0)
end
end
end
end
end
Roost::MainWindow.enable
Roost::MainWindow.enableWndProc
Roost::MainWindow.addwndproc (lambda {|hwnd, msg, wp, lp|
if msg == Win32API::WM_MOVING
p "WM_MOVING"
unless RPG::BGM.last.name.empty?
Audio.bgm_stop # 停止bgm
end
end
if msg == Win32API::WM_MOVE
p "WM_MOVE"
unless RPG::BGM.last.name.empty?
RPG::BGM.last.replay # 继续bgm
end
end
if msg == Win32API::WM_WINDOWPOSCHANGED
p "WM_WINDOWPOSCHANGED"
unless RPG::BGM.last.name.empty?
Audio.bgm_stop # 停止bgm
end
end
if msg == Win32API::WM_WINDOWPOSCHANGING
p "WM_WINDOWPOSCHANGING"
unless RPG::BGM.last.name.empty?
RPG::BGM.last.replay # 继续bgm
end
end
if msg==Win32API::WM_ACTIVATE
if wp == 0
p "WM_ACTIVATE", wp
unless RPG::BGM.last.name.empty?
Audio.bgm_stop # 停止bgm
end
else
p "WM_ACTIVATE", wp
unless RPG::BGM.last.name.empty?
RPG::BGM.last.replay # 继续bgm
end
end
end
})
事件码值参考 MSDN 或者 这里