golang 中 walk gui中使用获取目录的无法设置默认路径的情况

原创于 2018-06-15 14:49:31 发布 · 616 阅读

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#go #walk

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这里出现的是在使用
walk.FileDialog
ShowBrowseFolder中无法自动设置到指定的目录，这里进行的修改是

// commondialogs.go
callback := func(hwnd win.HWND, msg uint32, lp, wp uintptr) uintptr {
        const BFFM_INITIALIZED = 1
        const BFFM_SELCHANGED = 2
        const BFFM_SETSELECTION = win.WM_USER + 103

        if msg == BFFM_INITIALIZED { // ini send a path to select
            upath := strings.Replace(dlg.FilePath, "/", "\\", -1)
            win.SendMessage(hwnd, BFFM_SETSELECTION, win.TRUE, uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(upath))))
        }

        if msg == BFFM_SELCHANGED {
            _, err := pathFromPIDL(lp)
            var enabled uintptr
            if err == nil {
                enabled = 1
            }

            const BFFM_ENABLEOK = win.WM_USER + 101

            win.SendMessage(hwnd, BFFM_ENABLEOK, 0, enabled)
        }

        return 0
    }