Come mostrare, nascondere, spostare o ridimensionnare la tastiera su schermo
Puoi utilizzare Messaggi di Windows per manipolare la tastiera su schermo.
In questo modo:
WM_CSKEYBOARD = WM_USER + 192;
WM_CSKEYBOARDMOVE = WM_USER + 193;
WM_CSKEYBOARDRESIZE = WM_USER + 197;
// to show keyboard
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARD, 1, 0);
// to close keyboard
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARD, 2, 0);
// to fade keyboard
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARD, 3, 0);
// to toggle (show/hide) keyboard
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARD, 4, 0);
// to move keyboard (Left, Top - new position)
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARDMOVE, Left, Top);
// to resize keyboard
PostMessage(FindWindow('TFirstForm', 'CKeyboardFirstForm'), WM_CSKEYBOARDRESIZE, Width, Height);
Private Const WM_CSKEYBOARD = WM_USER + 192 Private Const WM_CSKEYBOARDMOVE = WM_USER + 193 Private Const WM_CSKEYBOARDRESIZE = WM_USER + 197
Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
'Code to show keyboard Dim hWnd As Long hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage hWnd, WM_CSKEYBOARD, 1, 0
'Code to close keyboard Dim hWnd As Long hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage hWnd, WM_CSKEYBOARD, 2, 0
'Code to move keyboard Dim hWnd As Long hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage hWnd, WM_CSKEYBOARDMOVE, 0, 0
'Code to resize keyboard Dim hWnd As Long hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage hWnd, WM_CSKEYBOARDMOVE, Width, Height |
using System; using System.Windows.Forms; using System.Runtime.InteropServices;
public const Int32 WM_USER = 1024; public const Int32 WM_CSKEYBOARD = WM_USER + 192; public const Int32 WM_CSKEYBOARDMOVE = WM_USER + 193; public const Int32 WM_CSKEYBOARDRESIZE = WM_USER + 197;
[DllImport("user32.dll", EntryPoint = "FindWindow")] private static extern Int32 FindWindow(string _ClassName, string _WindowName);
[DllImport("User32.DLL")] public static extern Boolean PostMessage(Int32 hWnd, Int32 Msg, Int32 wParam, Int32 lParam);
Int32 hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 1, 0 ); // Show PostMessage(hWnd, WM_CSKEYBOARD, 2, 0); // Hide PostMessage(hWnd, WM_CSKEYBOARDMOVE, 0, 0); // Move to 0, 0 PostMessage(hWnd, WM_CSKEYBOARDRESIZE, 600, 300); // Resize to 600, 300 |
Const WM_CSKEYBOARD = &H400 + 192 Const WM_CSKEYBOARDMOVE = &H400 + 193 Const WM_CSKEYBOARDRESIZE = &H400 + 197
Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Integer Declare Function PostMessage Lib "user32" Alias "PostMessageA" (ByVal hwnd As Integer, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Integer
'Open/show the Comfort On-Screen Keyboard Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 1, 0) End Sub
'Close the Comfort On-Screen Keyboard Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 2, 0) End Sub
'Move the Comfort On-Screen Keyboard; Move it first then show it Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARDMOVE, 200, 200) PostMessage(hWnd, WM_CSKEYBOARD, 1, 0) End Sub
'Toggle the Comfort On-Screen Keyboard Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 4, 0) End Sub
'Fade the Comfort On-Screen Keyboard Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 3, 0) End Sub
'Change the keyboard type and show it Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click 'Change the Registry entry for the required keyboard My.Computer.Registry.SetValue("HKEY_CURRENT_USER\Software\ComfortSoftware\CKeyboard", "KeyboardName", "Name of your chosen keyboard") 'Open the keyboard Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 1, 0) End Sub
'Change to another keyboard type and show it Private Sub Button7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button7.Click 'Change the Registry entry for the required keyboard My.Computer.Registry.SetValue("HKEY_CURRENT_USER\Software\ComfortSoftware\CKeyboard", "KeyboardName", "Name of another chosen keyboard") 'Open the keyboard Dim hWnd As Integer hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm") PostMessage(hWnd, WM_CSKEYBOARD, 1, 0) End Sub |
using namespace System::Runtime::InteropServices; using namespace System::Security::Permissions; using namespace Microsoft::Win32;
const System::UInt32 WM_USER = 1024; const System::UInt32 WM_CSKEYBOARD = WM_USER + 192; const System::UInt32 WM_CSKEYBOARDMOVE = WM_USER + 193;
[DllImport("user32.dll")] extern IntPtr FindWindow(String^ lpClassName, String^ lpWindowName); [DllImport("user32.dll")] extern IntPtr PostMessage(System::IntPtr hWnd, System::UInt32 Msg, int wParam, int lParam); [assembly:RegistryPermissionAttribute(SecurityAction::RequestMinimum, All = "HKEY_CURRENT_USER")];
....blah blah blah you normal code...
void button1_Click(System::Object^ sender, System::EventArgs^ e) { // Open/show the Comfort On-Screen Keyboard IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 1, 0); } void button2_Click(System::Object^ sender, System::EventArgs^ e) { // close the Comfort On-Screen Keyboard IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 2, 0); } void button3_Click(System::Object^ sender, System::EventArgs^ e) { //Move the Comfort On-Screen Keyboard; Move it first then show it IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARDMOVE, 200, 200); PostMessage(hWnd, WM_CSKEYBOARD, 1, 0); } void button4_Click(System::Object^ sender, System::EventArgs^ e) { //Toggle the Comfort On-Screen Keyboard IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 4, 0); } void button5_Click(System::Object^ sender, System::EventArgs^ e) { //Fade the Comfort On-Screen Keyboard IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 3, 0); } void button6_Click(System::Object^ sender, System::EventArgs^ e) { //Change the keyboard type and show it System::Object ^kname="NumPad";
//Change the Registry entry for the required keyboard
RegistryKey ^key= Registry::CurrentUser->OpenSubKey ( "Software\\ComfortSoftware\\CKeyboard",true); key->SetValue("KeyboardName",kname);
//Open the keyboard IntPtr hWnd; hWnd = FindWindow("TFirstForm", "CKeyboardFirstForm"); PostMessage(hWnd, WM_CSKEYBOARD, 1, 0); } |
/* * This file is heavily based on Jawin: <a href="http://jawinproject.sourceforge.net/" rel="external">http://jawinproject.sourceforge.net/</a> * * assumes ComfortSoftware keyboard is loaded... * */
package client.keyboard;
import java.io.ByteArrayInputStream; import java.io.IOException;
import org.jawin.COMException; import org.jawin.FuncPtr; import org.jawin.ReturnFlags; import org.jawin.io.LittleEndianInputStream; import org.jawin.io.LittleEndianOutputStream; import org.jawin.io.NakedByteStream;
public class ComfortSoftwareKeyboard {
protected static final String COMFORT_SOFTWARE_WINDOW_NAME = "CKeyboardFirstForm"; protected static final String COMFORT_SOFTWARE_CLASS_NAME = "TFirstForm";
protected static final int WM_USER = 1024; protected static final int WM_CSKEYBOARD = WM_USER + 192; protected static final int WM_CSKEYBOARDMOVE = WM_USER + 193;
protected static final Call FIND_WINDOW = new Call("USER32.DLL", "FindWindowW", "GG:I:", 8); protected static final Call POST_MESSAGE = new Call("USER32.DLL", "PostMessageW", "IIII:I:", 16);
private static ComfortSoftwareKeyboard INSTANCE = new ComfortSoftwareKeyboard();
public static ComfortSoftwareKeyboard getInstance() { return INSTANCE; }
protected int getWindowHandle() throws COMException, IOException { FuncPtr findWindow = null; findWindow = new FuncPtr(FIND_WINDOW.getDllName(), FIND_WINDOW.getFunctionName()); NakedByteStream bs = new NakedByteStream(); LittleEndianOutputStream leo = new LittleEndianOutputStream(bs); leo.writeStringUnicode(COMFORT_SOFTWARE_CLASS_NAME); leo.writeStringUnicode(COMFORT_SOFTWARE_WINDOW_NAME); byte[] b = findWindow.invoke(FIND_WINDOW.getParameterDescription(), FIND_WINDOW.getStackSize(), bs, null, ReturnFlags.CHECK_FALSE); LittleEndianInputStream leis = new LittleEndianInputStream( new ByteArrayInputStream(b)); int l = leis.readInt(); findWindow.close(); return l; }
public int move(int x, int y) throws COMException, IOException { int hWnd = getWindowHandle();
FuncPtr postMessage = null; postMessage = new FuncPtr(POST_MESSAGE.getDllName(), POST_MESSAGE.getFunctionName()); NakedByteStream bs = new NakedByteStream(); LittleEndianOutputStream leo = new LittleEndianOutputStream(bs);
leo.writeInt(hWnd); leo.writeInt(WM_CSKEYBOARDMOVE); leo.writeInt(x); leo.writeInt(y);
byte[] b = postMessage.invoke(POST_MESSAGE.getParameterDescription(), POST_MESSAGE.getStackSize(), bs, null, ReturnFlags.CHECK_FALSE); LittleEndianInputStream leis = new LittleEndianInputStream( new ByteArrayInputStream(b)); int l = leis.readInt(); postMessage.close(); return l; }
public int setVisible(boolean visible) throws COMException, IOException { int hWnd = getWindowHandle();
FuncPtr postMessage = null; postMessage = new FuncPtr(POST_MESSAGE.getDllName(), POST_MESSAGE.getFunctionName()); NakedByteStream bs = new NakedByteStream(); LittleEndianOutputStream leo = new LittleEndianOutputStream(bs);
leo.writeInt(hWnd); leo.writeInt(WM_CSKEYBOARD); leo.writeInt(visible ? 1 : 2); leo.writeInt(0);
byte[] b = postMessage.invoke(POST_MESSAGE.getParameterDescription(), POST_MESSAGE.getStackSize(), bs, null, ReturnFlags.CHECK_FALSE); LittleEndianInputStream leis = new LittleEndianInputStream( new ByteArrayInputStream(b)); int l = leis.readInt(); postMessage.close(); return l; }
public static void main(String[] args) throws Exception { try { ComfortSoftwareKeyboard keyboard = ComfortSoftwareKeyboard.getInstance(); keyboard.setVisible(true); Thread.sleep(1000); keyboard.setVisible(false); Thread.sleep(1000); keyboard.setVisible(true); for (int i = 0; i < 100;i++) { keyboard.move(i, i); } } catch (COMException e) { } finally { } } }
class Call { private int stackSize; private String functionName; private String parameterDescription; private String dllName;
public Call(String dllName, String functionName, String parameterDescription, int stackSize) { this.stackSize = stackSize; this.functionName = functionName; this.parameterDescription = parameterDescription; this.dllName = dllName; } public int getStackSize() {return stackSize;} public String getFunctionName() {return functionName;} public String getParameterDescription() {return parameterDescription;} public String getDllName() {return dllName;} } |
Se non riesci a utilizzare Messaggi di Windows, scarica e prova questi file:
https://www.comfortsoftware.com/download/ShowKB.exe
https://www.comfortsoftware.com/download/HideKB.exe
https://www.comfortsoftware.com/download/ToggleKB.exe
https://www.comfortsoftware.com/download/MoveTopKB.exe
https://www.comfortsoftware.com/download/MoveBottomKB.exe
https://www.comfortsoftware.com/download/MoveLeftKB.exe
https://www.comfortsoftware.com/download/MoveRightKB.exe
https://www.comfortsoftware.com/download/MoveKB.exe (Formato della riga di comando: MoveKB.exe Left Top)
https://www.comfortsoftware.com/download/SetNameKB.exe (Formato della riga di comando: SetNameKB.exe KeyboardName)
Se stai scrivendo software per chioschi utilizzando HTML, puoi utilizzare le speciali funzioni JavaScript per controllare la tastiera su schermo.
Con JavaScript puoi mostrare, nascondere o spostare la tastiera. Basta utilizzare le speciali funzioni JavaScript per aggiungere informazioni relative alla tastiera alla didascalia del browser e l'applicazione monitorerà le modifiche della didascalia.
Scarica il file con le funzioni JavaScript e gli esempi da qui: https://www.comfortsoftware.com/commander.html
WM_CSKEYBOARDMOVE: risoluzione del problema relativo allo spostamento della tastiera quando si utilizzano più schermi con DPI diversi.
Ad esempio, lo schermo 1 ha una risoluzione di 2560x1440 ed è impostato su "scala 125%"; nelle impostazioni di visualizzazione di Windows. Lo schermo 2 è 1920x1080 ed è impostato su "scala 100%".
Apri le impostazioni di compatibilità dell'app Windows del file CKeyboard.exe e imposta il comportamento DPI su "Applicazione", il che significa che l'applicazione gestisce tutti i calcoli relativi ai DPI. Con questa impostazione attivata, puoi passare valori di pixel fisici alla funzione di spostamento della tua API e la finestra della tastiera verrà quindi spostata esattamente in quella posizione.
Se desideri attivare questa modalità di compatibilità a livello di codice (ad esempio con il tuo programma di installazione), devi impostare la seguente chiave di registro:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers:
"C:\Program Files\ComfortKeyboard\CKeyboard.exe"="~ HIGHDPIAWARE"
Questo verrà quindi applicato a tutti gli utenti. In alternativa, è possibile inserire questa chiave nel registro dell'utente corrente (HKCU).

