BeforeMouseDown Event

FlexGrid for WinForms

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C1.Win.C1FlexGrid Namespace > C1FlexGridBase Class : BeforeMouseDown Event

Fires before the System.Windows.Forms.Control.MouseDown event is handled by the grid.

Syntax

[C1Description("Fires before the MouseDown event is handled by the grid.")]
public event BeforeMouseDownEventHandler BeforeMouseDown

[C1Description("Fires before the MouseDown event is handled by the grid.")]
public:
event BeforeMouseDownEventHandler^ BeforeMouseDown

'Declaration
 
<C1DescriptionAttribute("Fires before the MouseDown event is handled by the grid.")>
Public Event BeforeMouseDown As BeforeMouseDownEventHandler

'Usage
 
Dim instance As C1FlexGridBase
Dim handler As BeforeMouseDownEventHandler
 
AddHandler instance.BeforeMouseDown, handler

Remarks

This event fires before the grid processes the System.Windows.Forms.Control.MouseDown event, and gives the program a chance to customize the behavior of the control and optionally cancel the default handling of the mouse.

Example

The code below handles the BeforeMouseDown event to detect clicks on row headers and provide OLE drag and drop functionality.

void _flex_BeforeMouseDown(object sender, C1.Win.C1FlexGrid.BeforeMouseDownEventArgs e)
{
	// start dragging when the user clicks the row headers
	HitTestInfo hti = _flex.HitTest(e.X, e.Y);
	if (hti.Type == HitTestTypeEnum.RowHeader)
	{
		e.Cancel = true;  // cancel default handling
		HandleRowDragDrop(hti.Row); // handle row drag/drop
	}
}

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

C1FlexGridBase Class
C1FlexGridBase Members

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