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? ??? ?? Golang Go(Golang)?? ??? ???? ??? ??? ??????

Go(Golang)?? ??? ???? ??? ??? ??????

Nov 07, 2024 pm 10:52 PM

How to Create a Global Hotkey in Go (Golang)?

Go(Golang)?? ?? ???? ???? ??? ??????

Go(Golang)?? ?? ????? ???? ?? ???? ??? ?? ??? ?????. ??? ??? ?????. ?? ???? ??? ??? ????.

1. ?? ??? ????? ??

Go? syscall ???? ???? ??? ??? ??? ? ????. ??? ?????? ?? ??? ?? ????. ???? ??? ?????? ??? ?????.

godoc -http=:6060

??? ??? ??? http://localhost:6060/pkg/syscall/? ?????.

2. ??? ?? ??

?? ID, ???(Alt, Ctrl ?) ? ? ??? ???? ???? ???? ??? ????.

type Hotkey struct {
    Id        int // Unique id
    Modifiers int // Mask of modifiers
    KeyCode   int // Key code, e.g. 'A'
}

3. Windows?? User32.dll ??

Windows ??? ?? user32.dll? ?????:

user32 := syscall.MustLoadDLL("user32")
defer user32.Release()

4. ??? ??

user32.dll?? RegisterHotkey() ??? ??? ???? ???? ?????. ?:

// Hotkeys to listen to:
keys := map[int16]*Hotkey{
    1: &Hotkey{1, ModAlt + ModCtrl, 'O'},  // ALT+CTRL+O
    2: &Hotkey{2, ModAlt + ModShift, 'M'}, // ALT+SHIFT+M
    3: &Hotkey{3, ModAlt + ModCtrl, 'X'},  // ALT+CTRL+X
}

// Register hotkeys:
for _, v := range keys {
    r1, _, err := reghotkey.Call(
        0, uintptr(v.Id), uintptr(v.Modifiers), uintptr(v.KeyCode))
    if r1 == 1 {
        fmt.Println("Registered", v)
    } else {
        fmt.Println("Failed to register", v, ", error:", err)
    }
}

5. ??? ??? ??

user32.dll?? PeekMessage() ??? ?? ???? ?? ? ???? ?????.

peekmsg := user32.MustFindProc("PeekMessageW")

6. ??? ??? ??

??? ???? ????? ???? ??? ????. ??? ???? ??? ?? ????? ??? ?????.

for {
    var msg = &MSG{}
    peekmsg.Call(uintptr(unsafe.Pointer(msg)), 0, 0, 0, 1)

    // Registered id is in the WPARAM field:
    if id := msg.WPARAM; id != 0 {
        fmt.Println("Hotkey pressed:", keys[id])
        if id == 3 { // CTRL+ALT+X = Exit
            fmt.Println("CTRL+ALT+X pressed, goodbye...")
            return
        }
    }

    time.Sleep(time.Millisecond * 50)
}

? ??? ??? Go(Golang)? ??? ?? ???? ???? ???? ?? ???? ?? ? ????.

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