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64 lines
1.8 KiB
64 lines
1.8 KiB
// +build windows
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// Copyright 2014 Oleku Konko All rights reserved.
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// Use of this source code is governed by a MIT
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// license that can be found in the LICENSE file.
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// This module is a Terminal API for the Go Programming Language.
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// The protocols were written in pure Go and works on windows and unix systems
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package ts
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import (
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"syscall"
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"unsafe"
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)
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var (
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kernel32 = syscall.NewLazyDLL("kernel32.dll")
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// Retrieves information about the specified console screen buffer.
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// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms683171(v=vs.85).aspx
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screenBufferInfo = kernel32.NewProc("GetConsoleScreenBufferInfo")
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)
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// Contains information about a console screen buffer.
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// http://msdn.microsoft.com/en-us/library/windows/desktop/ms682093(v=vs.85).aspx
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type CONSOLE_SCREEN_BUFFER_INFO struct {
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DwSize COORD
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DwCursorPosition COORD
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WAttributes uint16
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SrWindow SMALL_RECT
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DwMaximumWindowSize COORD
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}
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// Defines the coordinates of a character cell in a console screen buffer.
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// The origin of the coordinate system (0,0) is at the top, left cell of the buffer.
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// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms682119(v=vs.85).aspx
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type COORD struct {
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X, Y uint16
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}
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// Defines the coordinates of the upper left and lower right corners of a rectangle.
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// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms686311(v=vs.85).aspx
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type SMALL_RECT struct {
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Left, Top, Right, Bottom uint16
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}
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func GetSize() (ws Size, err error) {
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var info CONSOLE_SCREEN_BUFFER_INFO
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rc, _, err := screenBufferInfo.Call(
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uintptr(syscall.Stdout),
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uintptr(unsafe.Pointer(&info)))
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if rc == 0 {
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return ws, err
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}
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ws = Size{info.SrWindow.Bottom,
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info.SrWindow.Right,
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info.DwCursorPosition.X,
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info.DwCursorPosition.Y}
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return ws, nil
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}
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