Go语言MessageBox用法实例

　　本文实例讲述了Go语言MessageBox用法。分享给大家供大家参考。具体如下：

　　复制代码 代码如下:package main
import (
syscall
unsafe
fmt
)
func abort(funcname string, err int) {
panic(funcname + failed: + syscall.Errno(err).Error())
}
var (
kernel32, _ = syscall.LoadLibrary(kernel32.dll)
getModuleHandle, _ = syscall.GetProcAddress(kernel32, GetModuleHandleW)
user32, _ = syscall.LoadLibrary(user32.dll)
messageBox, _ = syscall.GetProcAddress(user32, MessageBoxW)
)
const (
MB_OK = 0x00000000
MB_OKCANCEL = 0x00000001
MB_ABORTRETRYIGNORE = 0x00000002
MB_YESNOCANCEL = 0x00000003
MB_YESNO = 0x00000004
MB_RETRYCANCEL = 0x00000005
MB_CANCELTRYCONTINUE = 0x00000006
MB_ICONHAND = 0x00000010
MB_ICONQUESTION = 0x00000020
MB_ICONEXCLAMATION = 0x00000030
MB_ICONASTERISK = 0x00000040
MB_USERICON = 0x00000080
MB_ICONWARNING = MB_ICONEXCLAMATION
MB_ICONERROR = MB_ICONHAND
MB_ICONINFORMATION = MB_ICONASTERISK
MB_ICONSTOP = MB_ICONHAND
MB_DEFBUTTON1 = 0x00000000
MB_DEFBUTTON2 = 0x00000100
MB_DEFBUTTON3 = 0x00000200
MB_DEFBUTTON4 = 0x00000300
)
func MessageBox(caption, text string, style uintptr) (result int) {
// var hwnd HWND
ret, _, callErr := syscall.Syscall6(uintptr(messageBox), 4,
0, // HWND
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(text))), // Text
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(caption))), // Caption
style, // type
0,
0)
if callErr != 0 {
abort(Call MessageBox, int(callErr))
}
result = int(ret)
return
}
func main() {
defer syscall.FreeLibrary(kernel32)
defer syscall.FreeLibrary(user32)
fmt.Printf(Retern: %d\n, MessageBox(Done Title, This test is Done., MB_YESNOCANCEL))
}
func init() {
fmt.Print(Starting Up\n)
}

　　希望本文所述对大家的Go语言程序设计有所帮助。