Vb.net Add Placeholder on Custom Text inside Panel
I created a class that inherit panel and then fill the panel with Textbox. Then I try to add a watermark / placeholder in the Textbox with this code:
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
Dim sTxt As String = Me.Text
sTxt = IIf(sTxt.Length = 0, txt.Text, sTxt)
If m.Msg = &HF Then
If Not Me.Focused AndAlso String.IsNullOrEmpty(sTxt) AndAlso Not String.IsNullOrEmpty(Me.WaterMark) Then
Using g = Me.CreateGraphics()
TextRenderer.DrawText(g, Me.WaterMark, Me.Font, Me.ClientRectangle, Color.Red, Me.BackColor, TextFormatFlags.Top Or TextFormatFlags.Left)
End Using
End If
MyBase.Update()
End If
End Sub
I tried that code with Textbox only and the WaterMark does appear, but when I try to use it on my custom text the WaterMark never appear. I think the problem is because WndProc Event is never triggered because I added a Textbox inside the panel. So how can i overrides the Panel_WndProc to Txt_WndProc?
.net vb.net visual-studio-2015
edited Nov 14 '18 at 6:01
kit
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
add a comment |
I created a class that inherit panel and then fill the panel with Textbox. Then I try to add a watermark / placeholder in the Textbox with this code:
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
Dim sTxt As String = Me.Text
sTxt = IIf(sTxt.Length = 0, txt.Text, sTxt)
If m.Msg = &HF Then
If Not Me.Focused AndAlso String.IsNullOrEmpty(sTxt) AndAlso Not String.IsNullOrEmpty(Me.WaterMark) Then
Using g = Me.CreateGraphics()
TextRenderer.DrawText(g, Me.WaterMark, Me.Font, Me.ClientRectangle, Color.Red, Me.BackColor, TextFormatFlags.Top Or TextFormatFlags.Left)
End Using
End If
MyBase.Update()
End If
End Sub
I tried that code with Textbox only and the WaterMark does appear, but when I try to use it on my custom text the WaterMark never appear. I think the problem is because WndProc Event is never triggered because I added a Textbox inside the panel. So how can i overrides the Panel_WndProc to Txt_WndProc?
.net vb.net visual-studio-2015
edited Nov 14 '18 at 6:01
kit
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in aTextBoxuntil you type something into it? If so then you should make use of the Windows API intended for that specific purpose.
– jmcilhinney
Nov 14 '18 at 6:58
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03
add a comment |
I created a class that inherit panel and then fill the panel with Textbox. Then I try to add a watermark / placeholder in the Textbox with this code:
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
Dim sTxt As String = Me.Text
sTxt = IIf(sTxt.Length = 0, txt.Text, sTxt)
If m.Msg = &HF Then
If Not Me.Focused AndAlso String.IsNullOrEmpty(sTxt) AndAlso Not String.IsNullOrEmpty(Me.WaterMark) Then
Using g = Me.CreateGraphics()
TextRenderer.DrawText(g, Me.WaterMark, Me.Font, Me.ClientRectangle, Color.Red, Me.BackColor, TextFormatFlags.Top Or TextFormatFlags.Left)
End Using
End If
MyBase.Update()
End If
End Sub
I tried that code with Textbox only and the WaterMark does appear, but when I try to use it on my custom text the WaterMark never appear. I think the problem is because WndProc Event is never triggered because I added a Textbox inside the panel. So how can i overrides the Panel_WndProc to Txt_WndProc?
.net vb.net visual-studio-2015
edited Nov 14 '18 at 6:01
kit
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
I created a class that inherit panel and then fill the panel with Textbox. Then I try to add a watermark / placeholder in the Textbox with this code:
Protected Overrides Sub WndProc(ByRef m As Message)
MyBase.WndProc(m)
Dim sTxt As String = Me.Text
sTxt = IIf(sTxt.Length = 0, txt.Text, sTxt)
If m.Msg = &HF Then
If Not Me.Focused AndAlso String.IsNullOrEmpty(sTxt) AndAlso Not String.IsNullOrEmpty(Me.WaterMark) Then
Using g = Me.CreateGraphics()
TextRenderer.DrawText(g, Me.WaterMark, Me.Font, Me.ClientRectangle, Color.Red, Me.BackColor, TextFormatFlags.Top Or TextFormatFlags.Left)
End Using
End If
MyBase.Update()
End If
End Sub
I tried that code with Textbox only and the WaterMark does appear, but when I try to use it on my custom text the WaterMark never appear. I think the problem is because WndProc Event is never triggered because I added a Textbox inside the panel. So how can i overrides the Panel_WndProc to Txt_WndProc?
.net vb.net visual-studio-2015
.net vb.net visual-studio-2015
edited Nov 14 '18 at 6:01
kit
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
edited Nov 14 '18 at 6:01
kit
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
edited Nov 14 '18 at 6:01
kit
1,1063816
edited Nov 14 '18 at 6:01
kit
1,1063816
edited Nov 14 '18 at 6:01
kit
1,1063816
1,1063816
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
asked Nov 14 '18 at 5:07
XMozartXMozart
3241314
3241314
Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in aTextBoxuntil you type something into it? If so then you should make use of the Windows API intended for that specific purpose.
– jmcilhinney
Nov 14 '18 at 6:58
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03
add a comment |
Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in aTextBoxuntil you type something into it? If so then you should make use of the Windows API intended for that specific purpose.
– jmcilhinney
Nov 14 '18 at 6:58
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03
Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in a
TextBox until you type something into it? If so then you should make use of the Windows API intended for that specific purpose.– jmcilhinney
Nov 14 '18 at 6:58
Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in a
TextBox until you type something into it? If so then you should make use of the Windows API intended for that specific purpose.– jmcilhinney
Nov 14 '18 at 6:58
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03
add a comment |
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Are you talking about a cue banner, i.e. a text prompt that appears in a muted colour in a
TextBoxuntil you type something into it? If so then you should make use of the Windows API intended for that specific purpose.– jmcilhinney
Nov 14 '18 at 6:58
With that in mind, check out this thread
– jmcilhinney
Nov 14 '18 at 7:03