Set the Current Input Position on a Right Mouse Click
This VB.NET sample moves the text cursor to the right-click location in TX Text Control. The MouseDown event detects right-clicks, a helper function converts pixel coordinates to twips using the current DPI settings, and InputPosition places the caret at the calculated point.
I just read a thread in our Support Forum that a customer was asking how to set the current input position, when the end-user clicks the right mouse button. I would like to take this opportunity to publish the simple solution here.
We just need two things: the MouseDown event to check, if the end-user clicks the right mouse button and the InputPosition class to set the caret to that specific position. The returned coordinates from the MouseDown event can be passed to the InputPosition constructor.
Imports System.Drawing
Dim DPI As Point
Private Sub Form1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint
DPI.X = e.Graphics.DpiX
DPI.Y = e.Graphics.DpiY
End Sub
Private Function GetLocation(ByVal pt As Point) As Point
Dim m_pt As New System.Drawing.Point
Dim dpiX As Integer = DPI.X
Dim dpiY As Integer = DPI.Y
Dim offsetY As Integer = TextControl1.ScrollLocation.Y
Dim offsetX As Integer = TextControl1.ScrollLocation.X
m_pt = New Point(pt.X, pt.Y)
m_pt.X = (m_pt.X * CInt((1440 / dpiX))) + offsetX
m_pt.Y = (m_pt.Y * CInt((1440 / dpiY))) + offsetY
Return m_pt
End Function
Private Sub TextControl1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles TextControl1.MouseDown
If e.Button = MouseButtons.Right Then
TextControl1.InputPosition = New TXTextControl.InputPosition(GetLocation(e.Location))
End If
End SubRelated Posts
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