我想在win7中创建一个简单的虚拟键盘
|---|---|---| 第一个块中的 9 个字符 (abcdefgijk) |---|---|---| |---|---|---|
有 9 个按钮，当单击第一个按钮时更改为另一个视图。
|---|---|---| 美国广播公司 |---|---|---| 电子烟 |---|---|---| 伊克
现在我很困惑如何单击像按下键盘这样的按钮可以生成字符输出到另一个应用程序。我在用
System.Windows.Forms.SendKeys.SendWait(sendString);
但它不起作用。我知道 sendString 是正确的，因为我认为它是Console.WriteLine(sendString);.
另一个问题是单击按钮时焦点不会变回按钮。
任何人都有如何实现这个键盘的解决方案？
谢谢！
感谢您的回复，实际上我已经添加了这些代码，当我多次单击按钮时它也有一些问题。当我单击按钮时，焦点也不起作用，它总是专注于按钮。在此示例中，它仅包含 2 个按钮。你能帮忙看看那些代码发现错误吗？很多人认为！！
namespace WpfApplication5
{
public partial class UserControl1 : UserControl
{
[DllImport("user32.dll")]
public static extern int SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
[DllImport("user32.dll", SetLastError = true)]
public static extern UInt32 GetWindowLong(IntPtr hWnd, int nIndex);
private IInputElement focusedInputElement;
private Window parentWindow;
private List<Button> keyCollection = new List<Button>();
public UserControl1(Window parent)
{
this.parentWindow = parent;
this.setupKeyboardControl();
}
public UserControl1(IInputElement elementToFocusOn)
{
// set focus
this.focusedInputElement = elementToFocusOn;
// setup this control
this.setupKeyboardControl();
}
private void setupKeyboardControl()
{
InitializeComponent();
// add all keys to internal collection
this.addAllKeysToInternalCollection();
// install clicks
this.installAllClickEventsForCollection(this.keyCollection);
}
private void addAllKeysToInternalCollection()
{
// itterate all panels
// itterate all buttons
// add to list
Console.WriteLine("Run at here");
this.keyCollection.Add(A);
this.keyCollection.Add(B);
}
/// <summary>
/// Install click events for all keys in a collection
/// </summary>
/// <param name="keysToInstall"></param>
private void installAllClickEventsForCollection(List<Button> keysToInstall)
{
// itterate all
foreach (Button buttonElement in keysToInstall)
{
// install click event
buttonElement.Click += new RoutedEventHandler(buttonElement_Click);
}
}
/* private void Window_KeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.A)
A.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
else if (e.Key == Key.B)
B.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
}*/
void buttonElement_Click(object sender, RoutedEventArgs e)
{
// create variable for holding string
String sendString = "";
try
{
// stop all event handling
e.Handled = true;
// set sendstring to key
sendString = ((Button)sender).CommandParameter.ToString();
// if something to send
if (!String.IsNullOrEmpty(sendString))
{
// if sending a string
if (sendString.Length > 1)
{
// add {}
sendString = "{" + sendString + "}";
}
// if a focusable element has been specified
if (this.focusedInputElement != null)
{
Console.WriteLine("1",sendString);
// set keyboard focus
Keyboard.Focus(this.focusedInputElement);
// set normal focus
this.focusedInputElement.Focus();
}
// send key to simulate key press
// System.Windows.Forms.SendKeys.Send(sendString);
System.Windows.Forms.SendKeys.SendWait(sendString);
Console.WriteLine(sendString);
}
}
catch (Exception)
{
// do nothing - not important for now
Console.WriteLine("Could not send key press: {0}", sendString);
}
}
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
// if we have specified a parent
if (this.parentWindow != null)
{
// Get this window's handle
IntPtr HWND = new WindowInteropHelper(this.parentWindow).Handle;
Console.WriteLine("Run in UserControl load");
// style of window?
int GWL_EXSTYLE = (-20);
// get - retrieves information about a specified window
GetWindowLong(HWND, GWL_EXSTYLE);
// set - changes the attribute of a specified window - I think this stops it being focused on
SetWindowLong(HWND, GWL_EXSTYLE, (IntPtr)(0x8000000));
}
}
}
}