1// +build windows
 2// +build go1.4
 3
 4package mousetrap
 5
 6import (
 7	"os"
 8	"syscall"
 9	"unsafe"
10)
11
12func getProcessEntry(pid int) (*syscall.ProcessEntry32, error) {
13	snapshot, err := syscall.CreateToolhelp32Snapshot(syscall.TH32CS_SNAPPROCESS, 0)
14	if err != nil {
15		return nil, err
16	}
17	defer syscall.CloseHandle(snapshot)
18	var procEntry syscall.ProcessEntry32
19	procEntry.Size = uint32(unsafe.Sizeof(procEntry))
20	if err = syscall.Process32First(snapshot, &procEntry); err != nil {
21		return nil, err
22	}
23	for {
24		if procEntry.ProcessID == uint32(pid) {
25			return &procEntry, nil
26		}
27		err = syscall.Process32Next(snapshot, &procEntry)
28		if err != nil {
29			return nil, err
30		}
31	}
32}
33
34// StartedByExplorer returns true if the program was invoked by the user double-clicking
35// on the executable from explorer.exe
36//
37// It is conservative and returns false if any of the internal calls fail.
38// It does not guarantee that the program was run from a terminal. It only can tell you
39// whether it was launched from explorer.exe
40func StartedByExplorer() bool {
41	pe, err := getProcessEntry(os.Getppid())
42	if err != nil {
43		return false
44	}
45	return "explorer.exe" == syscall.UTF16ToString(pe.ExeFile[:])
46}