doujiaochan7317
doujiaochan7317
2018-10-14 22:50
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在Go中加载Windows DLL?

I need to use Windows DLLs in my applications, specificaly kernel32.dll. I only find this: WindowsDLL

But that "guide" is not so intiuitive.

For example, in Python you use ctypes. ej: ctypes.windll.kernel32.SetConsoleTextAtribute(handle, color)

How I can made the same thing but in Golang?

Anyone can give some examples of that I want?

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我需要在我的应用程序中使用Windows DLL,尤其是kernel32.dll。 我只能找到此文件: WindowsDLL

但是该“指南”并不是那么直观 。

例如,在Python中,您使用ctypes。 ej: ctypes.windll.kernel32.SetConsoleTextAtribute(句柄,颜色)

除了在Golang中如何制作相同的东西? \ n

任何人都可以举一些我想要的例子吗?

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1条回答 默认 最新

  • doushe7934
    doushe7934 2018-10-15 09:37
    已采纳

    Actually the link you have is a good reference. All you need now is choose one of the implementations proposed.

    You can find the documentation for kernel32.SetConsoleTextAtribute here: https://docs.microsoft.com/en-us/windows/console/setconsoletextattribute

    The exposed API is defined as:

    BOOL WINAPI SetConsoleTextAttribute(
      _In_ HANDLE hConsoleOutput,
      _In_ WORD   wAttributes
    );
    

    Example for the second option (using syscall.NewProc):

    package main
    
    import (
        "os"
        "syscall"
    )
    
    const (
        // defined base colors
        ForegroundBlue      uint = 1
        ForegroundGreen     uint = 2
        ForegroundRed       uint = 4
        ForegroundIntensity uint = 8
        BackgroundBlue      uint = 16
        BackgroundGreen     uint = 32
        BackgroundRed       uint = 64
        BackgroundIntensity uint = 128
    
        // colors can also be mixed
        ForegroundGrey = ForegroundBlue | ForegroundGreen | ForegroundRed
        ForegroundWhite = ForegroundBlue | ForegroundGreen | ForegroundRed | ForegroundIntensity
    )
    
    func main() {
        kernel32 := syscall.NewLazyDLL("kernel32.dll")
        setConsoleTextAttribute := kernel32.NewProc("SetConsoleTextAttribute")
        stdOutHandle := os.Stdout.Fd()
    
        attributes := ForegroundWhite | BackgroundRed
        ret, _, err := setConsoleTextAttribute.Call(stdOutHandle, uintptr(attributes))
        if err != nil {
            panic(err) // calling kernel32.SetConsoleTextAttribute failed
        }
    
        if ret == 0 {
            print("Could not set the desired attributes")
            // TODO: call GetLastError to get more information
        }
    
        print("OK")
    }
    
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