本例支持单键和组合键,不过注册的是操作系统的全局快捷键,这点需要注意,在代码中要做屏蔽处理
先建一个快捷键的工具类
public class HotKey
{
//定义了辅助键的名称(将数字转变为字符以便于记忆,也可去除此枚举而直接使用数值)
[Flags]
public enum KeyModifiers
{
None = 0,
Alt = 1,
Ctrl = 2,
Shift = 4,
WindowsKey = 8
}
//如果函数执行成功,返回值不为0。
//如果函数执行失败,返回值为0。要得到扩展错误信息,调用GetLastError。
[DllImport("user32.dll", SetLastError = true)]
public static extern bool RegisterHotKey(
IntPtr hWnd, //要定义热键的窗口的句柄
int id, //定义热键ID(不能与其它ID重复)
KeyModifiers fsModifiers, //标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效
Keys vk //定义热键的内容
);
[DllImport("user32.dll", SetLastError = true)]
public static extern bool UnregisterHotKey(
IntPtr hWnd, //要取消热键的窗口的句柄
int id //要取消热键的ID
);
}
快捷键配置类似下面这样
<HotKey Keys =" Ctrl+D1" Code ="100">
<CallMethod Name ="GisSelect" />
</HotKey>
<HotKey Keys ="F2" Code ="101">
<CallMethod Name ="GisZoomIn" />
</HotKey>
<HotKey Keys ="F3" Code ="102">
<CallMethod Name ="GisZoomOut" />
</HotKey>
<HotKey Keys ="Ctrl + D0" Code ="103">
<CallMethod Name ="GisReset" />
</HotKey>
CallMethod为反射调用的方法
下面代码对以上XML配置节进行读取并注册快捷键
var hotKeys = ToolStripConfig.FindHotKeys(compositeView.SmartPartsName, compositeView.SmartParts[0].ToString());
if (hotKeys != null)
{
var keyModifiersFields = typeof(HotKey.KeyModifiers).GetFields(BindingFlags.Static | BindingFlags.Public);
var keys = typeof(Keys).GetFields(BindingFlags.Static | BindingFlags.Public);
foreach (XElement hotKey in hotKeys)
{
var keyNameList = new List<string>();
hotKey.Attribute("Keys").Value.Split('+').ToList().ForEach(item => keyNameList.Add(item.Trim()));
//处理KeyModifiers
var keyModifiersFieldsValueList =
(from fi in keyModifiersFields
where keyNameList.Contains(fi.Name)
select (HotKey.KeyModifiers)fi.GetValue(null)).ToList();
//处理Keys
var keysValueList =
(from fi in keys
where keyNameList.Contains(fi.Name)
select (Keys)fi.GetValue(null)).ToList();
//组合键
if (keyNameList.Count > 1)
{
//注册快捷键
if (keyModifiersFieldsValueList.Count > 1)
HotKey.RegisterHotKey(Handle, int.Parse(hotKey.Attribute("Code").Value),
keyModifiersFieldsValueList[0] | keyModifiersFieldsValueList[1],
keysValueList[0]);
else
HotKey.RegisterHotKey(Handle, int.Parse(hotKey.Attribute("Code").Value),
keyModifiersFieldsValueList[0], keysValueList[0]);
}
//单键
else
{
//注册快捷键
HotKey.RegisterHotKey(Handle, int.Parse(hotKey.Attribute("Code").Value),
0, keysValueList[0]);
}
}
}
接着在窗体代码中对windows消息进行拦截,对键盘按键进行捕捉,读取配置文件,反射执行对应的配置方法
protected override void WndProc(ref Message m)
{
var compositeView =
_presenter.WorkItem.RootWorkItem.Workspaces[XSWorkSpaceConst.CONTENTWORKSPACE].ActiveSmartPart
as CompSmartPartZoneView;
if (compositeView != null && compositeView.SmartParts.Count > 0 && Equals(compositeView.SmartParts[0] as XSView))
{
//只有当前窗口是系统窗口,快捷键才响应
var findWindow = Control.FromHandle(GetForegroundWindow());
if (findWindow != null && findWindow.GetType().Name == "XSShellMainForm")
{
//快捷键响应,反射调用配置的方法
var hotKeys = ToolStripConfig.FindHotKeys(compositeView.SmartPartsName, compositeView.SmartParts[0].ToString());
if (hotKeys != null)
{
foreach (XElement hotKey in hotKeys)
{
if (m.WParam.ToInt32() == int.Parse(hotKey.Attribute("Code").Value))
{
Type t = compositeView.SmartParts[0].GetType();
RunSmartConfig.CallMethods(compositeView.SmartParts[0], t, hotKey.Elements("CallMethod"));
}
}
}
}
}
base.WndProc(ref m);
}
以上的 XSShellMainForm为当前主窗体的Type类型名称
最后在关闭窗体的时候,还要注销这个快捷键,这个过程同样要读取XML
var hotKeys = ToolStripConfig.FindHotKeys(compositeView.SmartPartsName,
compositeView.SmartParts[0].ToString());
if (hotKeys != null)
{
foreach (XElement hotKey in hotKeys)
{
HotKey.UnregisterHotKey(Handle, int.Parse(hotKey.Attribute("Code").Value));
}
}