MouseDown

Description

This event is fired each time the mouse button is pressed inside the control window. Returns the coordinates of a pixel pointed by the cursor.


Syntax

[VB]
Private Sub objActiveDcam_MouseDown( ByVal X As Integer, ByVal Y As Integer )

[C/C++]
HRESULT Fire_MouseDown( SHORT X, SHORT Y );


Data Types [VB]

X: Integer
Y: Integer

Parameters [C/C++]

X [in]

The X-coordinate of the pixel pointed by the cursor.

Y [in]

The Y-coordinate of the pixel pointed by the cursor.

   

Return Values

S_OK

Success

E_FAIL

Failure.

Example

This VB example uses the MouseDown event to display the value of the pixel pointed by the cursor:

Private Sub ActiveDcam1_MouseDown(ByVal X As Integer, ByVal Y As Integer)

      Dim Value As Integer   
      Value = ActiveDcam1.GetPixel(X, Y)

MsgBox Value

End Sub

Remarks

Note that the coordinates returned by this event refer to the image coordinate system, not to the screen coordinates.

Set the Acquire and ScrollBars properties to TRUE in order to display a scrollable live video and get a visual access to all parts of the image.