I have a problem and scenario is the following:
I've created user control with one component PropertyGrid. To this PropertyGrid I added button (Heximal Mode) to the PropertyGrid's ToolStrip. Everything is fine and works great!
But when this control is shown in form and user press "Windows->Switch User" and logging again with same User Name my button (Heximal Mode) disappear. Also the fourth button which was manually hid appears...
I don't know what happen. Probably windows reload its component on user log-in?
Windows 7 (x64/x86)
public partial class CompProperty : UserControl
{
private System.Windows.Forms.ToolStripButton _tsbMode = null;
public CompProperty()
{
InitializeComponent();
createAdditionalButtons();
}
private void createAdditionalButtons()
{
foreach ( Control control in propertyGrid.Controls )
{
ToolStrip toolStrip = control as ToolStrip;
if ( toolStrip != null )
{
toolStrip.Items[4].Visible = false;
_tsbMode = new System.Windows.Forms.ToolStripButton();
_tsbMode.CheckOnClick = true;
_tsbMode.Checked = true;
_tsbMode.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image;
_tsbMode.Image = Resources.img_edit;
_tsbMode.ImageTransparentColor = System.Drawing.Color.Magenta;
_tsbMode.Name = "tsbMode";
_tsbMode.Size = new System.Drawing.Size( 23, 22 );
_tsbMode.Text = "Heximal Mode";
_tsbMode.ToolTipText = "Heximal Mode";
toolStrip.Items.AddRange( new System.Windows.Forms.ToolStripItem[] {
_tsbMode} );
break;
}
}
}
}
Yes, this is by design. The PropertyGrid class rebuilds the toolbar when the SystemEvents.UserPreferencesChange event fires. Which is indeed likely to fire on a desktop switch. You could patch it like this:
using System;
using System.Windows.Forms;
class MyPropertyGrid : PropertyGrid {
protected override void OnSystemColorsChanged(EventArgs e) {
// Do nothing
}
}
Not ideal of course. Cold hard fact is that this simply isn't supported.
Related
I have a menu strip in place that when clicked upon, adds controls and shows them on the windows application I am making. However, when I try to click on another option and attempt to hide the previous controls shown, it does not hide itself but merely stays on the screen and the datagridview is shown on top of it. I tried the Hide() method but that does not appear to be working.
Here is my code (the AddControls method I made, where it is called, and the HideAllControls method I also made)
Add Controls -
private void AddControls()
{
// begin household head controls
Label householdHeadLbl = new Label()
{
Name = "lbl_householdHead",
Text = "Household Head"
};
householdHeadLbl.Font = new Font(householdHeadLbl.Font.FontFamily, 12);
householdHeadLbl.Location = new Point(86, 75);
householdHeadLbl.Size = new Size(130, 24);
////////////////////////////////////////////
TextBox houseHoldHeadTextBox = new TextBox()
{
Name = "txtBox_householdHead"
};
houseHoldHeadTextBox.Font = new Font(houseHoldHeadTextBox.Font.FontFamily, 12);
houseHoldHeadTextBox.Location = new Point(220, 72);
houseHoldHeadTextBox.Size = new Size(154, 24);
// add the controls
// household head controls
Controls.Add(householdHeadLbl);
Controls.Add(houseHoldHeadTextBox);
}
(There are more controls but I went past the 30000 character limit)
Menu Strip Insert Member Click -
private void MenuInsertMember_Click(object sender, EventArgs e)
{
AddControls();
}
HideAllControls -
private void HideAllControls(Control ctrl)
{
foreach (Control c in Controls)
{
if (c is TextBox || c is Label)
{
c.Hide();
}
else
{
break;
}
}
}
Menu Strip View Click -
private void MenuViewMembers_Click(object sender, EventArgs e)
{
// hide any controls left that may be left over from another option
HideAllControls(this);
}
I included a screenshot to help show/explain what I am encountering.
Insert screenshot - http://imgur.com/zGBY3b4
View screenshot - http://imgur.com/yecBbiw
Any help would be appreciated.
Thanks!
I have a form page with text boxes and data grid view and other forms that contain a tab control. I want to add the first form tab in the second form. I tried to write the code for the form to appear but it is larger than the tab container and doesn't fit. Only half of the form appears.
This is my code:
private void tcMainPage_SelectedIndexChanged(object sender, EventArgs e)
{
if (tcMainPage.SelectedIndex == 0)
{
GTOWN.PrintingPage BookInfo = new PrintingPage();
BookInfo.TopLevel = false;
BookInfo.FormBorderStyle = FormBorderStyle.None;
BookInfo.Dock = DockStyle.Fill;
tpSearch.Controls.Add(BookInfo);
BookInfo.Show();
}
}
this is the form
and that is what appears
Set your main FORM as a Container.
yourForm.IsMdiContainer = true;
Then add the child form to the tabPage:
private void tcMainPage_SelectedIndexChanged(object sender, EventArgs e)
{
if (tcMainPage.SelectedIndex == 0)
{
PrintingPage newFrm = new PrintingPage
{
MdiParent = this,
// This set the form parent as the tabClicked
Parent = tcMainPage.TabPages[0]
};
newFrm.Show();
}
}
my tab form work good in the same code
thank you all my code was correct but the problem was in tab property i deleted the tab and add another one and the code is working now
thank you
I face this issue and I create this if may help
public void addform(TabPage tp, Form f)
{
f.TopLevel = false;
//no border if needed
f.FormBorderStyle = FormBorderStyle.None;
f.AutoScaleMode = AutoScaleMode.Dpi;
if (!tp.Controls.Contains(f))
{
tp.Controls.Add(f);
f.Dock = DockStyle.Fill;
f.Show();
Refresh();
}
Refresh();
}
Forms are top-most objects and cannot be placed inside of other containers.
You may want to refactor your code so that the items on your Form are on a UserControl instead. At that point you can then add that UserControl to both a Form and a TabControl
public UserControl myControl(){ /* copy your current view code here */}
public Form myForm(){
Controls.Add(new myControl());
}
public Form myTabbedForm(){
var tabControl = new TabControl();
var page1 = new TabPage();
page1.Controls.Add(new myControl());
tabControl.TabPages.Add(page1);
this.Controls.Add(tabControl);
}
I have a tabcontrol which allows the creation of new tabs. Each new tab has a web browser control CEFSharp on it. When the new tab is created it is not shown the previously opened tab is shown; which is what we want.
However, the browser on the newly created tab is only added to the tab page, and only partially runs... it does not go to the loading state until the tab page is shown.
Here is the Tabpage creation code:
private void AddNewBrowser()
{
Log("Adding New Tab and Browser");
UiBrowser browser = new UiBrowser();
TabPage tp = new TabPage();
tp.Controls.Add(browser);
customTabControl1.TabPages.Add(tp);
}
The UiBrowser is a UserControl which contains the CEFSharp Browser Control plus some extra UI.
And here is the Startup code for the Browser itself.
private void UiBrowser_Load(object sender, EventArgs e)
{
Execute();
}
private void Execute()
{
webBrowser = new ChromiumWebBrowser("http://google.co.uk")
{
Dock = DockStyle.Fill,
Text = "Loading...",
Tag = Tag
};
webBrowser.TitleChanged += Browser_TitleChanged;
webBrowser.AddressChanged += Browser_AddressChanged;
webBrowser.ConsoleMessage += Browser_ConsoleMessage;
webBrowser.LoadingStateChanged += Browser_LoadingStateChanged;
webBrowser.StatusMessage += Browser_StatusMessage;
browserPanel.Controls.Add(webBrowser);
Application.DoEvents();
}
The code has been simplified for clarity and I have not found a solution on SO or elsewhere for this problem.
Question:
How do I get the browser control to load the webpage whilst remaining in the background? That is while the TabPage that the control is on is NOT shown to the user.
The Load event will only happen when the control becomes visible the first time:
Occurs before the control becomes visible for the first time.
so try moving your Execute method into the UserControl's constructor code.
There is no "official" way of doing that.
But if you really need it and don't afraid using internals, you may take a look at my answer to WinForms: Respond to BindingSource being applied.
The solution (or hack) is encapsulated in this little helper
public static class ControlUtils
{
static readonly Action<Control, bool> CreateControlFunc = (Action<Control, bool>)Delegate.CreateDelegate(typeof(Action<Control, bool>),
typeof(Control).GetMethod("CreateControl", BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { typeof(bool) }, null));
public static void CreateControls(this Control target)
{
if (!target.Created)
CreateControlFunc(target, true);
else
for (int i = 0; i < target.Controls.Count; i++)
target.Controls[i].CreateControls();
}
}
At the end of your form load event, add the following
this.CreateControls();
or
customTabControl1.CreateControls();
and also here
private void AddNewBrowser()
{
Log("Adding New Tab and Browser");
UiBrowser browser = new UiBrowser();
TabPage tp = new TabPage();
tp.Controls.Add(browser);
customTabControl1.TabPages.Add(tp);
if (customTabControl1.Created)
tp.CreateControls();
}
My setting:
I've got a C# application (.NET 3.5) in Visual Studio 2008. No chance to switch to WPF or whatsoever :).
My app contains a custom control (a button class derived from Windows.Forms.Button) that acts as a replacement for the Windows.Forms.TabControl. I can associate these buttons with one another and each button can be associated with one control that it is dealing with (usually some sort of Windows.Forms.Panel). It looks something like this:
public class TabButton : System.Windows.Forms.Button
{
// ...
protected override void OnClick(EventArgs e)
{
base.OnClick(e);
this.myAssociatedControl.Visible = true;
this.tellMyBuddiesToHideTheirControls();
}
// ...
}
Basically it is just about clicking a button, showing its bound control and having the controls bound to the associated buttons disappear - just like the TabControl, but the approach is easily designable and I can place the buttons far from their content panels.
The problem:
This works pretty well at runtime, but the usage at design time is arguably odd: With the mouse, find a control that´s belonging to the group and run a series of <Send To Back>s until the desired control is visible.
The question:
Is there a way to tell the VS designer to evaluate the clicks on the buttons at design time like it does with the TabControl so that I can switch the tabs just by clicking them like I would at runtime?
I've been searching for quite a while now. There are some articles here at SO but they only seem to cover adding additional attributes to the properties designer.
Edith says:
By request, an answer to my own question ...
This is the solution that is suitable to my application. It is basically an example from the msdn with some twists to get the custom designer to use a callback on click. Hope it helps anyone :-).
[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
public class TabButtonDesigner : System.Windows.Forms.Design.ControlDesigner
{
ShowTabGlyph myGlyph = null;
Adorner myAdorner;
public TabButtonDesigner()
{
}
public override void Initialize(IComponent component)
{
base.Initialize(component);
// Add the custom set of glyphs using the BehaviorService.
// Glyphs live on adornders.
myAdorner = new Adorner();
BehaviorService.Adorners.Add(myAdorner);
myGlyph = new ShowTabGlyph(BehaviorService, Control);
myGlyph.Callback = () =>
{
((MyCustomTabButton)this.Control).ShowMyTab();
};
myAdorner.Glyphs.Add(myGlyph);
}
class ShowTabGlyph : Glyph
{
Control control;
BehaviorService behaviorSvc;
public Action Callback
{
get;
set;
}
public ShowTabGlyph(BehaviorService behaviorSvc, Control control) :
base(new ShowTabBehavior())
{
this.behaviorSvc = behaviorSvc;
this.control = control;
}
public override Rectangle Bounds
{
get
{
// Create a glyph that is 10x10 and sitting
// in the middle of the control. Glyph coordinates
// are in adorner window coordinates, so we must map
// using the behavior service.
Point edge = behaviorSvc.ControlToAdornerWindow(control);
Size size = control.Size;
Point center = new Point(edge.X + (size.Width / 2),
edge.Y + (size.Height / 2));
Rectangle bounds = new Rectangle(
center.X - 5,
center.Y - 5,
10,
10);
return bounds;
}
}
public override Cursor GetHitTest(Point p)
{
// GetHitTest is called to see if the point is
// within this glyph. This gives us a chance to decide
// what cursor to show. Returning null from here means
// the mouse pointer is not currently inside of the glyph.
// Returning a valid cursor here indicates the pointer is
// inside the glyph, and also enables our Behavior property
// as the active behavior.
if (Bounds.Contains(p))
{
return Cursors.Hand;
}
return null;
}
public override void Paint(PaintEventArgs pe)
{
// Draw our glyph. It is simply a blue ellipse.
pe.Graphics.DrawEllipse(Pens.Blue, Bounds);
}
// By providing our own behavior we can do something interesting
// when the user clicks or manipulates our glyph.
class ShowTabBehavior : Behavior
{
public override bool OnMouseUp(Glyph g, MouseButtons button)
{
//MessageBox.Show("Hey, you clicked the mouse here");
//this.
ShowTabGlyph myG = (ShowTabGlyph)g;
if (myG.Callback != null)
{
myG.Callback();
}
return true; // indicating we processed this event.
}
}
}
}
[DesignerAttribute(typeof(TabButtonDesigner))]
public class MyCustomTabButton : System.Windows.Forms.Button
{
// The attribute will assign the custom designer to the TabButton
// and after a rebuild the button contains a centered blue circle
// that acts at design time like the button in runtime does ...
// ...
}
I'm creating a multi-tabbed .NET application that allows the user to dynamically add and remove tabs at runtime. When a new tab is added, a control is added to it (as a child), in which the contents can be edited (eg. a text box). The user can perform tasks on the currently visible text box using a toolbar/menu bar.
To better explain this, look at the picture below to see an example of what I want to accomplish. It's just a mock-up, so it doesn't actually work that way, but it shows what I want to get done. Essentially, like a multi-tabbed Notepad.
View the image here: http://picasion.com/pic15/324b466729e42a74b9632c1473355d3b.gif
Is this possible in .NET? I'm pretty sure it is, I'm just looking for a way that it can be implemented.
You could use a simple extension method:
public static void PasteIntoCurrentTab(this TabControl tabControl)
{
if (tabControl.SelectedTab == null)
{
// Could throw here.
return;
}
if (tabControl.SelectedTab.Controls.Count == 0)
{
// Could throw here.
return;
}
RichTextBox textBox = tabControl.SelectedTab.Controls[0] as RichTextBox;
if (textBox == null)
{
// Could throw here.
return;
}
textBox.Paste();
}
Usage:
myTabControl.PasteIntoCurrentTab();
I suggest you keep some "current state" variables updated so you always have a pointer to the selected Tab Page, and its child control (in the case of a tabbed-notepad emulation discussed here : a TextBox). My preference would be to keep track of the TabPage<>TextBox connections using a Dictionary to avoid having to cast the TextBoxes if they are accessed using the TabPage.Controls route : the following code assumes you have a TabControl named 'tabControl1 on a Form :
Dictionary<TabPage, TextBox> dct_TabPageToTextBox;
int tabCnt = 1;
TabPage currentTabPage;
TextBox currentTextBox;
So, as you create each new TabPage at run-time you call something like this :
private void AddNewTabPage()
{
if (dct_TabPageToTextBox == null) dct_TabPageToTextBox = new Dictionary<TabPage, TextBox>();
currentTabPage = new TabPage("Page " + tabCnt.ToString());
tabControl1.TabPages.Add(currentTabPage);
currentTextBox = new TextBox();
dct_TabPageToTextBox.Add(currentTabPage, currentTextBox);
currentTabPage.Controls.Add(currentTextBox);
currentTextBox.Dock = DockStyle.Fill;
currentTextBox.Text = "sample text for page " + tabCnt.ToString();
tabControl1.SelectedTab = currentTabPage;
tabCnt++;
}
As the end-user changes the selected TabPage you can simply update your current state variables like this :
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
currentTabPage = tabControl1.SelectedTab;
currentTextBox = dct_TabPageToTextBox[currentTabPage];
MessageBox.Show("text in current Tab Page is : " + currentTextBox.Text);
}
So now have the code that is invoked by your menu choices applied only to the currentTextBox.
best, Bill
I tried this for fun ... I made a form with a ToolStripContainer, and a ToolStrip inside it, with the standard buttons (which includes the paste button). I renamed the paste button to pasteButton, and hooking everything up you get:
public Form2()
{
InitializeComponent();
TabControl tc = new TabControl();
toolStripContainer1.ContentPanel.Controls.Add(tc);
tc.Dock = DockStyle.Fill;
TextBox selectedTextBox = null;
pasteButton.Click += (_, __) => selectedTextBox.Paste(Clipboard.GetText(TextDataFormat.Text));
int pages = 0;
newTabButton.Click += (_,__) => {
TextBox tb = new TextBox { Multiline = true, Dock = DockStyle.Fill, ScrollBars = ScrollBars.Vertical };
TabPage tp = new TabPage("Page " + (++pages).ToString());
tc.Selected += (o, e) => selectedTextBox = e.TabPage == tp ? tb: selectedTextBox;
tp.Controls.Add(tb);
tc.TabPages.Add(tp);
tc.SelectedTab = tp;
selectedTextBox = tb;
};
}