event MouseDown (Button as Integer, Shift as Integer, X as OLE_XPOS_PIXELS, Y as OLE_YPOS_PIXELS)

Occurs when the user presses a mouse button.

 TypeDescription 
   Button as Integer An integer that identifies the button that was pressed to cause the event as as 1 for Left Mouse Button, 2 for Right Mouse Button and 4 for Middle Mouse Button.  
   Shift as Integer An integer that corresponds to the state of the SHIFT, CTRL, and ALT keys when the button specified in the button argument is pressed or released.  
   X as OLE_XPOS_PIXELS A single that specifies the current X location of the mouse pointer. The X value is always expressed in container coordinates.  
   Y as OLE_YPOS_PIXELS A single that specifies the current Y location of the mouse pointer. The Y value is always expressed in container coordinates.  

Use a MouseDown or MouseUp event procedure to specify actions that will occur when a mouse button is pressed or released. Unlike the Click and DblClick events, MouseDown and MouseUp events lets you 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 keyboard modifiers. Use the ItemFromPoint property to get the item from point. Use the ColumnFromPoint property to get the column from point. Use the DateFromPoint property to specify the date from the cursor. Use the AnchorFromPoint property to retrieve the identifier of the anchor element from the cursor. The AnchorClick event notifies your application when the user clicks an anchor element. The NoteFromPoint property retrieves the note/box from the cursor. Almost all properties that get an object from point supports -1,-1 coordinate that specifies the current cursor position, so no conversion is required for X and Y coordinates.

Syntax for MouseDown event, /NET version, on:

private void MouseDownEvent(object sender,short Button,short Shift,int X,int Y)
{
}

Private Sub MouseDownEvent(ByVal sender As System.Object,ByVal Button As Short,ByVal Shift As Short,ByVal X As Integer,ByVal Y As Integer) Handles MouseDownEvent
End Sub

Syntax for MouseDown event, /COM version, on:

private void MouseDownEvent(object sender, AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent e)
{
}

void OnMouseDown(short Button,short Shift,long X,long Y)
{
}

void __fastcall MouseDown(TObject *Sender,short Button,short Shift,int X,int Y)
{
}

procedure MouseDown(ASender: TObject; Button : Smallint;Shift : Smallint;X : Integer;Y : Integer);
begin
end;

procedure MouseDownEvent(sender: System.Object; e: AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent);
begin
end;

begin event MouseDown(integer Button,integer Shift,long X,long Y)
end event MouseDown

Private Sub MouseDownEvent(ByVal sender As System.Object, ByVal e As AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent) Handles MouseDownEvent
End Sub

Private Sub MouseDown(Button As Integer,Shift As Integer,X As Single,Y As Single)
End Sub

Private Sub MouseDown(ByVal Button As Integer,ByVal Shift As Integer,ByVal X As Long,ByVal Y As Long)
End Sub

LPARAMETERS Button,Shift,X,Y

PROCEDURE OnMouseDown(oG2antt,Button,Shift,X,Y)
RETURN

Syntax for MouseDown event, /COM version (others), on:

<SCRIPT EVENT="MouseDown(Button,Shift,X,Y)" LANGUAGE="JScript">
</SCRIPT>

<SCRIPT LANGUAGE="VBScript">
Function MouseDown(Button,Shift,X,Y)
End Function
</SCRIPT>

Procedure OnComMouseDown Short llButton Short llShift OLE_XPOS_PIXELS llX OLE_YPOS_PIXELS llY
	Forward Send OnComMouseDown llButton llShift llX llY
End_Procedure

METHOD OCX_MouseDown(Button,Shift,X,Y) CLASS MainDialog
RETURN NIL

void onEvent_MouseDown(int _Button,int _Shift,int _X,int _Y)
{
}

function MouseDown as v (Button as N,Shift as N,X as OLE::Exontrol.G2antt.1::OLE_XPOS_PIXELS,Y as OLE::Exontrol.G2antt.1::OLE_YPOS_PIXELS)
end function

function nativeObject_MouseDown(Button,Shift,X,Y)
return

The following Access sample prints the cell's caption that has been clicked:

Private Sub G2antt1_MouseDown(ByVal Button As Integer, ByVal Shift As Integer, ByVal X As Long, ByVal Y As Long)
    Dim h As HITEM
    Dim c As Long, hit As Long
    h = G2antt1.ItemFromPoint(-1, -1, c, hit)
    If Not (h = 0) Then
        MsgBox "The """ & G2antt1.Items.CellValue(h, c) & """ cell has been double clicked."
    End If
End Sub

The following VB sample prints the cell's caption that has been clicked:

Private Sub G2antt1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    ' Converts the container coordinates to client coordinates
    X = X / Screen.TwipsPerPixelX
    Y = Y / Screen.TwipsPerPixelY
    Dim h As HITEM
    Dim c As Long
    Dim hit As EXG2ANTTLibCtl.HitTestInfoEnum
    ' Gets the item from (X,Y)
    h = G2antt1.ItemFromPoint(X, Y, c, hit)
    If Not (h = 0) Then
        Debug.Print G2antt1.Items.CellValue(h, c) & " HT = " & hit
    End If
End Sub

If you need to add a context menu based on the item you can use the MouseUp event, like in the following VB sample ( the sample uses the Exontrol's ExPopupMenu Component ):

Private Sub G2antt1_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
    If (Button = 2) Then
        ' Converts the container coordinates to client coordinates
        X = X / Screen.TwipsPerPixelX
        Y = Y / Screen.TwipsPerPixelY
        Dim h As HITEM
        Dim c As Long, hit as Long
        ' Gets the item from (X,Y)
        h = G2antt1.ItemFromPoint(X, Y, c, hit)
        If Not (h = 0) Then
            Dim i As Long
            PopupMenu1.Items.Add G2antt1.Items.CellValue(h, c)
            i = PopupMenu1.ShowAtCursor
        End If
    End If
End Sub

The following VC sample displays the caption of the cell being clicked:

#include "Items.h"

static CString V2S( VARIANT* pv, LPCTSTR szDefault = _T("") )
{
	if ( pv )
	{
		if ( pv->vt == VT_ERROR )
			return szDefault;

		COleVariant vt;
		vt.ChangeType( VT_BSTR, pv );
		return V_BSTR( &vt );
	}
	return szDefault;
}

void OnMouseDownG2antt1(short Button, short Shift, long X, long Y) 
{
	int c = 0, hit = 0, hItem = m_g2antt.GetItemFromPoint( X, Y, &c, &hit );
	if ( ( hItem != 0 ) || ( c != 0 ) )
	{
		CItems items = m_g2antt.GetItems();
		COleVariant vtItem( hItem ), vtColumn( c );
		CString strCaption = V2S( &items.GetCellValue( vtItem, vtColumn ) ), strOutput;
		strOutput.Format( "Cell: '%s', Hit = %08X\n", strCaption, hit );
		OutputDebugString( strOutput );
	}
}

The following VB.NET sample displays the caption from the cell being clicked:

Private Sub AxG2antt1_MouseDownEvent(ByVal sender As Object, ByVal e As AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent) Handles AxG2antt1.MouseDownEvent
    With AxG2antt1
        Dim i As Integer, c As Integer, hit As EXG2ANTTLib.HitTestInfoEnum
        i = .get_ItemFromPoint(e.x, e.y, c, hit)
        If (Not (i = 0) Or Not (c = 0)) Then
            Debug.WriteLine("Cell: " & .Items.CellValue(i, c) & " Hit: " & hit.ToString())
        End If
    End With
End Sub

The following C# sample displays the caption from the cell being clicked:

private void axG2antt1_MouseDownEvent(object sender, AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent e)
{
	int c = 0;
	EXG2ANTTLib.HitTestInfoEnum hit;
	int i = axG2antt1.get_ItemFromPoint( e.x, e.y, out c,out hit );
	if ( ( i != 0 ) || ( c != 0 ) )
	{
		string s = axG2antt1.Items.get_CellValue( i,c ).ToString();
		s = "Cell: " + s + ", Hit: " + hit.ToString();
		System.Diagnostics.Debug.WriteLine( s );
	}
}

The following VFP sample displays the caption from the cell being clicked:

*** ActiveX Control Event ***
LPARAMETERS button, shift, x, y

local c, hit
c = 0
hit = 0
with thisform.G2antt1
	.Items.DefaultItem = .ItemFromPoint( x, y, @c, @hit )
	if ( .Items.DefaultItem <> 0 ) or ( c <> 0 )
		wait window nowait .Items.CellValue( 0, c ) + " " + Str( hit )
	endif
endwith

The following VB sample displays the start data of the bar from the point:

Private Sub G2antt1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    With G2antt1
        Dim h As HITEM, c As Long, hit As HitTestInfoEnum
        h = .ItemFromPoint(-1, -1, c, hit)
        If Not (h = 0) Then
            Dim k As Variant
            k = .Chart.BarFromPoint(-1, -1)
            If Not IsEmpty(k) Then
                Debug.Print .Items.ItemBar(h, k, exBarStart)
            End If
        End If
    End With
End Sub

The following C++ sample displays the start data of the bar from the point:

#include "Items.h"
#include "Chart.h"

CString V2Date( VARIANT* pvtValue )
{
	COleVariant vtDate;
	vtDate.ChangeType( VT_BSTR, pvtValue );
	return V_BSTR( &vtDate );
}

void OnMouseDownG2antt1(short Button, short Shift, long X, long Y) 
{
	long c = 0, hit = 0, h = m_g2antt.GetItemFromPoint( -1, -1, &c, &hit );
	if ( h != 0 )
	{
		COleVariant vtKey = m_g2antt.GetChart().GetBarFromPoint( -1, -1 );
		if ( V_VT( &vtKey ) != VT_EMPTY )
		{
			COleVariant vtStart = m_g2antt.GetItems().GetItemBar( h, vtKey, 1 /*exBarStart*/ );
			OutputDebugString( V2Date( &vtStart ) );
		}
	}
}

The following VB.NET sample displays the start data of the bar from the point:

Private Sub AxG2antt1_MouseDownEvent(ByVal sender As Object, ByVal e As AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent) Handles AxG2antt1.MouseDownEvent
    With AxG2antt1
        Dim c As Long, hit As EXG2ANTTLib.HitTestInfoEnum, h As Integer = .get_ItemFromPoint(-1, -1, c, hit)
        If Not (h = 0) Then
            Dim k As Object
            k = .Chart.BarFromPoint(-1, -1)
            If Not k Is Nothing Then
                System.Diagnostics.Debug.WriteLine(.Items.ItemBar(h, k, EXG2ANTTLib.ItemBarPropertyEnum.exBarStart))
            End If
        End If
    End With
End Sub

The following C# sample displays the start data of the bar from the point:

private void axG2antt1_MouseDownEvent(object sender, AxEXG2ANTTLib._IG2anttEvents_MouseDownEvent e)
{
	int c = 0;
	EXG2ANTTLib.HitTestInfoEnum hit = EXG2ANTTLib.HitTestInfoEnum.exHTCell;
	int h = axG2antt1.get_ItemFromPoint(-1, -1, out c, out hit);
	if (h != 0)
	{
		object k = axG2antt1.Chart.get_BarFromPoint(-1, -1);
		if (k != null)
			System.Diagnostics.Debug.WriteLine( axG2antt1.Items.get_ItemBar( h, k, EXG2ANTTLib.ItemBarPropertyEnum.exBarStart ) );
	}
}

The following VFP sample displays the start data of the bar from the point:

*** ActiveX Control Event ***
LPARAMETERS button, shift, x, y

With thisform.G2antt1
	local h, c, hit
    h = .ItemFromPoint(-1, -1, c, hit)
    If (h # 0) Then
        local k
        k = .Chart.BarFromPoint(-1, -1)
        If !Empty(k) Then
            ? .Items.ItemBar(h, k, 1)
        EndIf
    EndIf
EndWith

 


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