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syscall : add a field to ProcAttr so that StartProcess can hide the executed application on windows

The SW_HIDE parameter looks like the only way for a windows GUI application to execute a CLI subcommand without having a shell windows appearing.

R=brainman, golang-dev, bradfitzgo, rsc1
CC=golang-dev
https://golang.org/cl/4439055
This commit is contained in:
Vincent Vanackere 2011-04-22 00:12:06 +10:00 committed by Alex Brainman
parent 22a2f42cef
commit 1f59004511
2 changed files with 28 additions and 3 deletions

View File

@ -218,9 +218,10 @@ func joinExeDirAndFName(dir, p string) (name string, err int) {
}
type ProcAttr struct {
Dir string
Env []string
Files []int
Dir string
Env []string
Files []int
HideWindow bool
}
var zeroAttributes ProcAttr
@ -282,6 +283,10 @@ func StartProcess(argv0 string, argv []string, attr *ProcAttr) (pid, handle int,
si := new(StartupInfo)
si.Cb = uint32(unsafe.Sizeof(*si))
si.Flags = STARTF_USESTDHANDLES
if attr.HideWindow {
si.Flags |= STARTF_USESHOWWINDOW
si.ShowWindow = SW_HIDE
}
si.StdInput = fd[0]
si.StdOutput = fd[1]
si.StdErr = fd[2]

View File

@ -77,6 +77,7 @@ const (
HANDLE_FLAG_INHERIT = 0x00000001
STARTF_USESTDHANDLES = 0x00000100
STARTF_USESHOWWINDOW = 0x00000001
DUPLICATE_CLOSE_SOURCE = 0x00000001
DUPLICATE_SAME_ACCESS = 0x00000002
@ -240,6 +241,25 @@ type ByHandleFileInformation struct {
FileIndexLow uint32
}
// ShowWindow constants
const (
// winuser.h
SW_HIDE = 0
SW_NORMAL = 1
SW_SHOWNORMAL = 1
SW_SHOWMINIMIZED = 2
SW_SHOWMAXIMIZED = 3
SW_MAXIMIZE = 3
SW_SHOWNOACTIVATE = 4
SW_SHOW = 5
SW_MINIMIZE = 6
SW_SHOWMINNOACTIVE = 7
SW_SHOWNA = 8
SW_RESTORE = 9
SW_SHOWDEFAULT = 10
SW_FORCEMINIMIZE = 11
)
type StartupInfo struct {
Cb uint32
_ *uint16