Message dialogs improvements (windows).
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ec8eb571eb
commit
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3 changed files with 106 additions and 11 deletions
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@ -11,17 +11,9 @@ import (
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)
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var (
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comdlg32 = syscall.NewLazyDLL("comdlg32.dll")
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ole32 = syscall.NewLazyDLL("ole32.dll")
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shell32 = syscall.NewLazyDLL("shell32.dll")
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getOpenFileName = comdlg32.NewProc("GetOpenFileNameW")
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getSaveFileName = comdlg32.NewProc("GetSaveFileNameW")
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commDlgExtendedError = comdlg32.NewProc("CommDlgExtendedError")
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coInitializeEx = ole32.NewProc("CoInitializeEx")
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coUninitialize = ole32.NewProc("CoUninitialize")
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coCreateInstance = ole32.NewProc("CoCreateInstance")
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coTaskMemFree = ole32.NewProc("CoTaskMemFree")
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shBrowseForFolder = shell32.NewProc("SHBrowseForFolderW")
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shGetPathFromIDListEx = shell32.NewProc("SHGetPathFromIDListEx")
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shCreateItemFromParsingName = shell32.NewProc("SHCreateItemFromParsingName")
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34
init_windows.go
Normal file
34
init_windows.go
Normal file
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@ -0,0 +1,34 @@
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package zenity
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import "syscall"
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var (
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comdlg32 = syscall.NewLazyDLL("comdlg32.dll")
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kernel32 = syscall.NewLazyDLL("kernel32.dll")
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ole32 = syscall.NewLazyDLL("ole32.dll")
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shell32 = syscall.NewLazyDLL("shell32.dll")
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user32 = syscall.NewLazyDLL("user32.dll")
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getCurrentThreadId = kernel32.NewProc("GetCurrentThreadId")
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coInitializeEx = ole32.NewProc("CoInitializeEx")
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coUninitialize = ole32.NewProc("CoUninitialize")
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coCreateInstance = ole32.NewProc("CoCreateInstance")
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coTaskMemFree = ole32.NewProc("CoTaskMemFree")
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getClassName = user32.NewProc("GetClassNameA")
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setWindowsHookEx = user32.NewProc("SetWindowsHookExW")
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unhookWindowsHookEx = user32.NewProc("UnhookWindowsHookEx")
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callNextHookEx = user32.NewProc("CallNextHookEx")
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enumChildWindows = user32.NewProc("EnumChildWindows")
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getDlgCtrlID = user32.NewProc("GetDlgCtrlID")
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setWindowText = user32.NewProc("SetWindowTextW")
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)
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type _CWPRETSTRUCT struct {
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Result uintptr
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LParam uintptr
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WParam uintptr
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Message uint32
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HWnd uintptr
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}
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@ -1,12 +1,12 @@
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package zenity
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import (
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"runtime"
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"syscall"
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"unsafe"
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)
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var (
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user32 = syscall.NewLazyDLL("user32.dll")
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messageBox = user32.NewProc("MessageBoxW")
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)
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@ -49,17 +49,86 @@ func message(typ int, text string, options []Option) (bool, error) {
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flags |= 0x40 // MB_ICONINFORMATION
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}
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if typ == 2 && opts.defcancel {
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if opts.extra == "" {
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flags |= 0x100 // MB_DEFBUTTON2
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} else {
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flags |= 0x200 // MB_DEFBUTTON3
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}
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}
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if opts.title != "" {
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caption = uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(opts.title)))
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}
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if opts.ok != "" || opts.cancel != "" || opts.extra != "" {
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runtime.LockOSThread()
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defer runtime.UnlockOSThread()
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hook, err := hookMessageLabels(typ, opts)
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if hook == 0 {
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return false, err
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}
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defer unhookWindowsHookEx.Call(hook)
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}
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n, _, err := messageBox.Call(0,
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uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(text))),
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caption, flags)
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if n == 0 {
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return false, err
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} else {
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return n == 1 /* IDOK */ || n == 6 /* IDYES */, nil
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}
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if n == 7 || n == 2 && typ != 2 { // IDNO
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return false, ErrExtraButton
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}
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if n == 1 || n == 6 { // IDOK, IDYES
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return true, nil
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}
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return false, nil
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}
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func hookMessageLabels(typ int, opts options) (hook uintptr, err error) {
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tid, _, _ := getCurrentThreadId.Call()
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hook, _, err = setWindowsHookEx.Call(12, // WH_CALLWNDPROCRET
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syscall.NewCallback(func(code int, wparam, lparam uintptr) uintptr {
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msg := *(*_CWPRETSTRUCT)(unsafe.Pointer(lparam))
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if msg.Message == 0x0110 { // WM_INITDIALOG
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name := [7]byte{}
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n, _, _ := getClassName.Call(msg.HWnd, uintptr(unsafe.Pointer(&name)), uintptr(len(name)))
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if string(name[:n]) == "#32770" {
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enumChildWindows.Call(msg.HWnd,
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syscall.NewCallback(func(hwnd, lparam uintptr) uintptr {
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name := [7]byte{}
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n, _, _ := getClassName.Call(hwnd, uintptr(unsafe.Pointer(&name)), uintptr(len(name)))
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if string(name[:n]) == "Button" {
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ctl, _, _ := getDlgCtrlID.Call(hwnd)
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var text string
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switch ctl {
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case 1, 6: // IDOK, IDYES
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text = opts.ok
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case 2: // IDCANCEL
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if typ == 2 {
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text = opts.cancel
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} else if opts.extra != "" {
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text = opts.extra
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} else {
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text = opts.ok
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}
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case 7: // IDNO
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text = opts.extra
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}
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if text != "" {
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ptr := syscall.StringToUTF16Ptr(text)
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setWindowText.Call(hwnd, uintptr(unsafe.Pointer(ptr)))
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}
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}
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return 1
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}), 0)
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}
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}
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next, _, _ := callNextHookEx.Call(hook, uintptr(code), wparam, lparam)
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return next
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}), 0, tid)
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return
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}
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