LLPlayer.KeyDown Method

Applies to TestComplete 15.40, last modified on March 25, 2022

Description

Use the KeyDown method to simulate pressing of a key specified by its virtual-key code. The method performs the same action as the KeyDown event of a low-level procedure.

Declaration

LLPlayer.KeyDown(VKCode, Delay)

VKCode [in]    Required    Integer    
Delay [in]    Required    Integer    
Result None

Applies To

The method is applied to the following object:

Parameters

The method has the following parameters:

VKCode

The code of the key to press. For a list of key codes, see the Virtual-Key Codes article in the MSDN library.

If the Win32API plugin is installed and enabled in TestComplete, you can use the named constants VK_xxxx instead of the hard-coded key code values. The available VK_xxxx constants are listed under the Win32API node in the Code Completion window.

Delay

The number of milliseconds passed after you command TestComplete to simulate the pressing of a key and before TestComplete starts to simulate the pressing. The delay gives you the possibility to better emulate real-life conditions. Also, it is necessary in order for the key pressing to be properly processed by the operating system.

If Delay is negative, it is set to the Auto-wait timeout.

If Delay is greater than 1000, the waiting progress will be shown in the TestComplete indicator during the test run.

Result Value

None.

Remarks

  • To simulate a complete keystroke, you need to execute both the KeyDown and KeyUp methods.

  • Since KeyDown simulates a pressing event, you can use it to emulate “hold and click” actions in your tests, that is, holding down a keyboard key while pressing a mouse button.

Example

The code below launches NOTEPAD.EXE and enters the "0A" string in Notepad's main window using the KeyDown and KeyUp methods.

To execute this script successfully, you should add NOTEPAD.EXE to your project's collection of tested applications. For detailed information, see Adding Tested Applications.

JavaScript, JScript

function LLPlayerExample()
{
  // Launches Notepad
  WshShell.Run("notepad.exe", SW_NORMAL);
  
  // Enters "0" in Notepad's main window
  LLPlayer.KeyDown(VK_NUMPAD0, 2000);
  LLPlayer.KeyUp(VK_NUMPAD0, 2000);
  
  // Enters "A" in Notepad's main window
  LLPlayer.KeyDown(VK_SHIFT, 2000); // Presses Shift
  LLPlayer.KeyDown(97, 2000); // Presses "a"
  LLPlayer.KeyUp(97, 2000); // Releases "a"
  LLPlayer.KeyUp(VK_SHIFT, 2000); // Releases Shift
}

Python

def LLPlayerExample():
  # Launches Notepad
  WshShell.Run("notepad.exe", SW_NORMAL)
  # Enters "0" in Notepad's main window
  LLPlayer.KeyDown(VK_NUMPAD0, 2000)
  LLPlayer.KeyUp(VK_NUMPAD0, 2000)
  # Enters "A" in Notepad's main window 
  LLPlayer.KeyDown(VK_SHIFT, 2000)  # Presses Shift 
  LLPlayer.KeyDown(97, 2000) # Presses "a"
  LLPlayer.KeyUp(97, 2000) # Releases "a"
  LLPlayer.KeyUp(VK_SHIFT, 2000) # Releases Shift

VBScript

Sub LLPlayerExample()

  ' Launches Notepad
  Call WshShell.Run("notepad.exe", SW_NORMAL)
  
  ' Enters "0" in Notepad's main window
  Call LLPlayer.KeyDown(VK_NUMPAD0, 2000)
  Call LLPlayer.KeyUp(VK_NUMPAD0, 2000)
  
  ' Enters "A" in Notepad's main window
  Call LLPlayer.KeyDown(VK_SHIFT, 2000) ' Presses Shift
  Call LLPlayer.KeyDown(97, 2000) ' Presses "a"
  Call LLPlayer.KeyUp(97, 2000) ' Releases "a"
  Call LLPlayer.KeyUp(VK_SHIFT, 2000) ' Releases Shift
       
End Sub

DelphiScript

function LLPlayerExample;
begin

  // Launches Notepad
  WshShell.Run('notepad.exe', SW_NORMAL);
  
  // Enters "0" in Notepad's main window
  LLPlayer.KeyDown(VK_NUMPAD0, 2000);
  LLPlayer.KeyUp(VK_NUMPAD0, 2000);
  
  // Enters "A" in Notepad's main window
  LLPlayer.KeyDown(VK_SHIFT, 2000); // Presses Shift
  LLPlayer.KeyDown(97, 2000); // Presses "a"
  LLPlayer.KeyUp(97, 2000); // Releases "a"
  LLPlayer.KeyUp(VK_SHIFT, 2000); // Releases Shift

end;

C++Script, C#Script

function LLPlayerExample()
{
  // Launches Notepad
  WshShell["Run"]("notepad.exe", SW_NORMAL);
  
  // Enters "0" in Notepad's main window
  LLPlayer["KeyDown"](VK_NUMPAD0, 2000);
  LLPlayer["KeyUp"](VK_NUMPAD0, 2000);
  
  // Enters "A" in Notepad's main window
  LLPlayer["KeyDown"](VK_SHIFT, 2000); // Presses Shift
  LLPlayer["KeyDown"](97, 2000); // Presses "a"
  LLPlayer["KeyUp"](97, 2000); // Releases "a"
  LLPlayer["KeyUp"](VK_SHIFT, 2000); // Releases Shift
}

See Also

Testing Applications in Low-Level Mode
KeyUp Method
Low-Level Procedure Events
KeyDown Method (Desktop Objects)
Keys Action
Keys Method
Simulating Keystrokes

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