Image.MouseDown event (Access)
The MouseDown event occurs when the user presses a mouse button.
expression.MouseDown (Button, Shift, X, Y)
expression A variable that represents an Image object.
|Button||Required||Integer||The button that was pressed to trigger the event. If you need to test for the Button argument, you can use one of the following intrinsic constants as bit masks:
|Shift||Required||Integer||The state of the Shift, Ctrl, and Alt keys when the button specified by the Button argument was pressed or released. If you need to test for the Shift argument, you can use one of the following intrinsic constants as bit masks:
|X||Required||Single||The x coordinate for the current location of the mouse pointer, in twips.|
|Y||Required||Single||The y coordinate for the current location of the mouse pointer, in twips.|
The MouseDown event applies only to forms, form sections, and controls on a form, and not to controls on a report.
This event does not apply to a label attached to another control, such as the label for a text box. It applies only to "freestanding" labels. Pressing and releasing a mouse button in an attached label has the same effect as pressing and releasing the button in the associated control. The normal events for the control occur; no separate events occur for the attached label.
To run a macro or event procedure when these events occur, set the OnMouseDown property to the name of the macro or to [Event Procedure].
You can use a MouseDown event to specify what happens when a particular mouse button is pressed or released. Unlike the Click and DblClick events, the MouseDown event enables you to distinguish between the left, right, and middle mouse buttons. You can also write code for mouse-keyboard combinations that use the Shift, Ctrl, and Alt keys.
To cause a MouseDown event for a form to occur, press the mouse button in a blank area or record selector on the form. To cause a MouseDown event for a form section to occur, press the mouse button in a blank area of the form section.
The following apply to MouseDown events:
If a mouse button is pressed while the pointer is over a form or control, that object receives all mouse events up to and including the last MouseUp event.
If mouse buttons are pressed in succession, the object that receives the mouse event after the first press receives all mouse events until all buttons are released.
To respond to an event caused by moving the mouse, you use a MouseMove event.
The following example shows how you can find out which mouse button caused a MouseDown event.
To try the example, add the following event procedure to a form.
Private Sub Form_MouseDown(Button As Integer, _ Shift As Integer, X As Single, _ Y As Single) If Button = acLeftButton Then MsgBox "You pressed the left button." End If If Button = acRightButton Then MsgBox "You pressed the right button." End If If Button = acMiddleButton Then MsgBox "You pressed the middle button." End If End Sub
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