关于win32api的createwindow的问题

SixRC

首先 CreateWindow 并非这个api的真名 大多数api都分 A(ansi) 和 W(unicode) 两个版本
用哪个版本要基于你传入参数是什么编码的 纯英文就用A 因为 RM 好像是 utf-8 和 ansi 在英文区域不冲突的
然后这个api有点特殊。。
"CreateWindow is implemented as a call to the CreateWindowEx function, as shown below."

C 代码复制

#define CreateWindowA(lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)\
CreateWindowExA(0L, lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)
 
#define CreateWindowW(lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)\
CreateWindowExW(0L, lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)
 
#ifdef UNICODE
#define CreateWindow  CreateWindowW
#else
#define CreateWindow  CreateWindowA
#endif

#define CreateWindowA(lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)\


CreateWindowExA(0L, lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)


 


#define CreateWindowW(lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)\


CreateWindowExW(0L, lpClassName, lpWindowName, dwStyle, x, y, nWidth, nHeight, hWndParent, hMenu, hInstance, lpParam)


 


#ifdef UNICODE


#define CreateWindow  CreateWindowW


#else


#define CreateWindow  CreateWindowA


#endif

所以其实你需要调用的是 CreateWindowExA
其实Win32API 能否取到api只和api名字是否正确有关  后面的和传参相关 不对程序可能崩掉
然后看参数
CreateWindowExA
RM是32位的 32位传参 int 就是 long  DWORD 是 unsigned long 用 L 吧(其实 l 也没事的)
句柄 HANDLE 是 void* 其实也是 l
l的意义是原值传入 p的意义是把ruby字符串的地址传入
也可以都写 l 字符串传入 [str].pack("p").unpack("l")[0] 就行
所以我们有 依次 LppLllllllll

RUBY 代码复制

c=Win32API.new("user32","CreateWindowExA","LppLllllllll","l")
p c.call(0,"Button","hi",0x10000000 | 0x00040000,400,400,250,150,0,0,0x400000,0)

c=Win32API.new("user32","CreateWindowExA","LppLllllllll","l")


p c.call(0,"Button","hi",0x10000000 | 0x00040000,400,400,250,150,0,0,0x400000,0)

假如有些参数需要指向结构体 你需要利用ruby字符串来建构它 会稍微麻烦一点
大概就是这样

SixRC

proudmor 发表于 2020-2-17 19:11
现在获取输入的内容和销毁窗口搞定了，就剩中文显示的问题了。

昨天没看到 点评一下我 或者 @一下我吧...不然我不知道你回了啊啊
RM默认应该是utf-8编码
所以对于A版本的函数 你需要用
MultiByteToWideChar 把字符串转换成unicode 再用
WideCharToMultiByte 转成 ansi
第一个参数代码页你需要写常数 不能写CP_ACP 你应该懂的
缓存区域你可以 buf = "0" * size
size通过上面的函数返回
具体看函数说明
对于转换到unicode 需要 buf = "0" * size * 2
具体看函数说明 要看仔细
看他返回的单位是 字节数 还是 字数
我给你写个例子

RUBY 代码复制

MultiByteToWideChar = Win32API.new("kernel32","MultiByteToWideChar","llplpl","l")
WideCharToMultiByte = Win32API.new("kernel32","WideCharToMultiByte","llplplll","l")
UTF8 = 0xFDE9
CPACP = 0
def utf8ToAnsi(str)
  len = MultiByteToWideChar.call(UTF8, 0, str, -1, "", 0)
  buf = "00" * len
  MultiByteToWideChar.call(UTF8, 0, str, -1, buf, len)
  len = WideCharToMultiByte.call(CPACP, 0, buf, -1, "", 0, 0, 0)
  retbuf = "0" * len
  WideCharToMultiByte.call(CPACP, 0, buf, -1, retbuf, len, 0, 0)
  retbuf
end
 
title = utf8ToAnsi("测试")
c=Win32API.new("user32","CreateWindowExA","LppLllllllll","l")
p c.call(0,"Button",title,0x10000000 | 0x00040000,400,400,250,150,0,0,0x400000,0)

MultiByteToWideChar = Win32API.new("kernel32","MultiByteToWideChar","llplpl","l")


WideCharToMultiByte = Win32API.new("kernel32","WideCharToMultiByte","llplplll","l")


UTF8 = 0xFDE9


CPACP = 0


def utf8ToAnsi(str)


  len = MultiByteToWideChar.call(UTF8, 0, str, -1, "", 0)


  buf = "00" * len


  MultiByteToWideChar.call(UTF8, 0, str, -1, buf, len)


  len = WideCharToMultiByte.call(CPACP, 0, buf, -1, "", 0, 0, 0)


  retbuf = "0" * len


  WideCharToMultiByte.call(CPACP, 0, buf, -1, retbuf, len, 0, 0)


  retbuf


end


 


title = utf8ToAnsi("测试")


c=Win32API.new("user32","CreateWindowExA","LppLllllllll","l")


p c.call(0,"Button",title,0x10000000 | 0x00040000,400,400,250,150,0,0,0x400000,0)

你改改就能用了