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