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 |
0
active
oldest
votes
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53293514%2fvb-net-add-placeholder-on-custom-text-inside-panel%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53293514%2fvb-net-add-placeholder-on-custom-text-inside-panel%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
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