golang呼叫cmd命令時如何隱藏dos窗口

透過go的標準函式庫exec呼叫cmd指令時會閃彈黑窗口，為解決此問題在windows下可以用win32 API 的 WinExec。

此問題主要出現在帶有UI或無控制台的程式呼叫cmd時。

編譯go時加入參數：

go build  -ldflags="-H windowsgui"

package main
import (
    "errors"
    "
)
import (
    "github.com/CodyGuo/win"
)
var (
    winExecError = map[uint32]string{
    0:  "The system is out of memory or resources.",
    2:  "The .exe file is invalid.",
    3:  "The specified file was not found.",
    11: "The specified path was not found.",
    }
)
func main() {
    err := execRun("cmd /c start http://www.baidu.com")
    if err != nil {
        log.Fatal(err)
    }
}
func execRun(cmd string) error {
    lpCmdLine := win.StringToBytePtr(cmd)
//http://baike.baidu.com/link?url=51sQomXsIt6OlYEAV74YZ0JkHDd2GbmzXcKj_4H1R4ILXvQNf3MXIscKnAkSR93e7Fyns4iTmSatDycEb
HrXzq
    ret := win.WinExec(lpCmdLine, win.SW_HIDE)
    if ret <= 31 {
        return errors.New(winExecError[ret])
    }   return nil
}

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