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@ -18,7 +18,6 @@ package ui
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import (
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import (
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"fmt"
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"fmt"
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"path/filepath"
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"syscall"
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"syscall"
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"unsafe"
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"unsafe"
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@ -34,8 +33,8 @@ var (
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user32 = windows.NewLazySystemDLL("user32.dll")
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user32 = windows.NewLazySystemDLL("user32.dll")
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getCurrentProcessIdProc = kernel32.NewProc("GetCurrentProcessId")
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getCurrentProcessIdProc = kernel32.NewProc("GetCurrentProcessId")
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queryFullProcessImageNameProc = kernel32.NewProc("QueryFullProcessImageNameW")
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getConsoleWindowProc = kernel32.NewProc("GetConsoleWindow")
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getConsoleWindowProc = kernel32.NewProc("GetConsoleWindow")
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getWindowThreadProcessIdProc = user32.NewProc("GetWindowThreadProcessId")
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showWindowAsyncProc = user32.NewProc("ShowWindowAsync")
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showWindowAsyncProc = user32.NewProc("ShowWindowAsync")
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)
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)
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@ -47,17 +46,13 @@ func getCurrentProcessId() (uint32, error) {
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return uint32(r), nil
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return uint32(r), nil
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}
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}
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func queryFullProcessImageName(h windows.Handle) (string, error) {
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func getWindowThreadProcessId(hwnd uintptr) (uint32, error) {
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const maxSize = 4096
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pid := uint32(0)
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str := make([]uint16, maxSize)
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r, _, e := syscall.Syscall(getWindowThreadProcessIdProc.Addr(), 2, hwnd, uintptr(unsafe.Pointer(&pid)), 0)
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size := len(str)
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r, _, e := syscall.Syscall6(queryFullProcessImageNameProc.Addr(), 4,
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uintptr(h), 0, uintptr(unsafe.Pointer(&str[0])), uintptr(unsafe.Pointer(&size)),
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0, 0)
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if r == 0 {
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if r == 0 {
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return "", fmt.Errorf("ui: QueryFullProcessImageName failed: %d", e)
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return 0, fmt.Errorf("ui: GetWindowThreadProcessId failed: %d", e)
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}
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}
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return syscall.UTF16ToString(str[0:size]), nil
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return pid, nil
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}
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}
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func getConsoleWindow() (uintptr, error) {
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func getConsoleWindow() (uintptr, error) {
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@ -76,65 +71,29 @@ func showWindowAsync(hwnd uintptr, show int) error {
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return nil
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return nil
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}
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}
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func getParentProcessId() (uint32, error) {
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pid, err := getCurrentProcessId()
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if err != nil {
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return 0, err
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}
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pe := windows.ProcessEntry32{}
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pe.Size = uint32(unsafe.Sizeof(pe))
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h, err := windows.CreateToolhelp32Snapshot(windows.TH32CS_SNAPPROCESS, 0)
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if err != nil {
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return 0, err
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}
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defer windows.CloseHandle(h)
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if err := windows.Process32First(h, &pe); err != nil {
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return 0, err
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}
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for {
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if pe.ProcessID == pid {
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return pe.ParentProcessID, nil
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}
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if err := windows.Process32Next(h, &pe); err != nil {
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return 0, err
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}
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}
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panic("not reach")
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}
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func getProcessName(pid uint32) (string, error) {
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h, err := windows.OpenProcess(processQueryLimitedInformation, false, pid)
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if err != nil {
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return "", err
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}
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defer windows.CloseHandle(h)
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return queryFullProcessImageName(h)
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}
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// hideConsoleWindowOnWindows will hide the console window that is showing when
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// hideConsoleWindowOnWindows will hide the console window that is showing when
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// compiling on Windows without specifying the '-ldflags "-Hwindowsgui"' flag.
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// compiling on Windows without specifying the '-ldflags "-Hwindowsgui"' flag.
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func hideConsoleWindowOnWindows() {
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func hideConsoleWindowOnWindows() {
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ppid, err := getParentProcessId()
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pid, err := getCurrentProcessId()
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if err != nil {
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if err != nil {
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// Ignore errors because:
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// Ignore errors because:
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// 1. It is not critical if the console can't be hid.
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// 1. It is not critical if the console can't be hid.
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// 2. There is nothing to do when errors happen.
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// 2. There is nothing to do when errors happen.
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return
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return
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}
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}
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name, err := getProcessName(ppid)
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if err != nil {
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// Ignore errors
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return
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}
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if filepath.Base(name) != "explorer.exe" {
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// Probably the parent process is console. The name might be
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// cmd.exe, go.exe or other terminal tools.
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return
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}
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w, err := getConsoleWindow()
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w, err := getConsoleWindow()
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if err != nil {
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if err != nil {
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// Ignore errors
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// Ignore errors
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return
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return
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}
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}
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showWindowAsync(w, windows.SW_HIDE)
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// Get the process ID of the console's creater.
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cpid, err := getWindowThreadProcessId(w)
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if err != nil {
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// Ignore errors
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return
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}
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if pid == cpid {
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// The current process created its own console. Hide this.
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showWindowAsync(w, windows.SW_HIDE)
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}
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}
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}
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