When I'm loading a child form in MDIparent the control box also appears. I want to remove the control box and the border of child form.
Also I'm writing code as
private void Form_mainMenu_Load(object sender, EventArgs e)
{
this.WindowState = FormWindowState.Maximized;
this.ControlBox = false;
this.FormBorderStyle = FormBorderStyle.None;
}
If you really want to customize the appearance of title bar of mdiChild Window, it seems you need handle painting of non-client areas of child window by handling WM_NCPAINT message.
Also you need to handle messages like WM_SETCURSOR, WM_MOUSEMOVE, WM_NCLBUTTONDOWN, ... .
As a workaround you can use a panel instead of mdiParent.
Create parent form and don't set IsMdiContainer.
Add a panel to your parent form and name it "ContainerPanel" and set its Dock property to fill.
Create your child form and add it to panel with none border style, no control box, fill dock style and non top level.
Here is sample code:
var f = new ChildForm();
f.TopLevel = false;
f.ControlBox = false;
f.Dock = DockStyle.Fill;
f.BorderStyle = System.Windows.Forms.BorderStyle.None;
/*I assume this code is in your ParentForm and so 'this' points to ParentForm that contains ContainerPanel*/
this.ContainerPanel.Controls.Add(f);
f.Show();
Using such method you can control every aspect of your hand made mdi window. For example you can use a Menu to show list of open windows and a toolstrip to close windows.
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Description
I have Main form (Home) with IsMDIContainer property set to true.
Then i added a panel on form and set it DOCK property to
FILL
After that i created child form (products) and open on main form
on button click.
Problem i am facing
when i clicked on button to open product i can't see any form. Either it is overlayed by panel or some thing else is going on which i don't know.
What i tried
Changed HOME form IsMDIContainer property back to false
change panel DOCK to bottom (for test)
Again set IsMDIConatiner to true , i got the form.
What i want ?
i want that panel to be DOCK fill and want MDI Parent and child functional should function
Setting TopMost property of child form to true And ShowOnTaskBar to false i got it fixed
Set show on task bar property of form to false
Call a method on form resize checked the FormWindowState
if it is minimized then i set the TopMost property of child form to true
private void Form1_Resize(object sender, EventArgs e)
{
Form minimizedForm = sender as Form;
if (minimizedForm.WindowState == FormWindowState.Minimized)
{
minimizedForm.TopMost = true;
}
}
I am working on a Windows application. I have a MainForm (Parent) and several childForm. There is a listview in MainForm that contains a childForm name list and by clicking on each name in the list, the relevant childForm shows and the previous ChildForm closes.
I use this codes to show childForm and close the previous childForm in MainForm.cs (ParentForm):
CloseForms();
frm_draft = new frm_ShowDraft();
frm_draft.MdiParent = this;
frm_draft.Show();
CloseForm() is a method that checks, which childForm is runnig and closes it.
So far everything is good.
In one of the childforms there is a Button. When the user clicks on it, it should close this childForm and show another. But when I click on the button, childForm2 shows out of MainForm. How can I show it inside of MainForm?
My code in the button click event:
this.close();
frm_c2 = new frm_child2();
frm_c2.MdiParent = new MainForm().ParentForm; /// Or this.MdiForm
frm_c2.Show();
You should set same MdiForm and call Close at the end:
frm_c2 = new frm_child2();
frm_cLetter.MdiParent = this.MdiParent;
frm_cLetter.Show();
this.Close();
http://www.independent-software.com/weifenluo-dockpanelsuite-tutorial-cookbook/
To show a child form in the main form use the WeiFen Luo library.
This control will make it easier to dock forms into your main form visual studio docking screens
Form with 3 forms inside:
Make sure the IsMdiContainter prop is true.
Example:
public Form1()
{
InitializeComponent();
Form2 f2 = new Form2(); // create new form
// dockPanel is an control from WeiFen Luo more info see the link
// dockPanel control is docked in your mainform.
// this will open Form2 in the dockPanel and align it left
f2.Show(dockPanel, DockState.DockLeft);
}
More docking options:
DockState.Fill docks form in over the hole dockPanel
DockState.Right docks form at the rightside of the dockPanel
DockState.Top docks form at the topside of the dockPanel
for more option check the link
This control will handel responsifnes of the docking forms and will handle allot of positioning calculations for you.
When a child form is opened it is hidden behind the title bar of MDI Parent Container.
The Child form's WindowState is set to Maximized. FormBorderStyle is set to None.
If I minimize the MDI parent and maximize it, then the child form comes in to front.
How to overcome this situation?
Edit:
I use the following code to open a child form.
this.childForm= new ChildForm();
this.childForm.MdiParent = this;
this.WindowState = FormWindowState.Maximized;
this.childForm.Dock = DockStyle.Fill;
this.childForm.Show();
this.childForm.BringToFront();
this.childForm.Focus();
Try the following code.
Form1 newMDIChild = new Form1();
newMDIChild.MdiParent = this;
newMDIChild.Show();
this.LayoutMdi(MdiLayout.Cascade);
newMDIChild.Dock = DockStyle.Fill;
The native Windows MDI implementation cannot deal with borderless MDI child windows. Unfortunately, Winforms forgets to enforce that restriction. You can move the WindowState assignment after the Show() call but that causes another problem.
Just don't make it borderless, the border isn't visible anyway.
AboutBox1 ab = new AboutBox1();
ab.MdiParent = MDIForm.ActiveForm;
ab.TopMost = true;
ab.Show();
I have an MDI form which displays a treeView control, when the user clicks on the tree node child form, it opens:
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
frmPartMaster frm = new frmPartMaster();
frm.Show();
}
Here frm is displaying the backside of the tree control but I want it to show form in front of parent, not back. So I changed the code to:
private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
frmPartMaster frm = new frmPartMaster();
frm.Show(this);
}
Here the child form is displayed in front of the tree, but when I minimize the child form it goes to task bar.How do I get it to go to the left corner of of parent form?
You have to set the parent form's IsMdiContainer property to true. Then while opening the child form add the following code:
frm.MdiParent = this;
Are you using MDI? Then it won't come to Task bar. You can set the ShowInTaskbar option to false, which will not display for in Taskbar.
Real MDI child forms do not minimize to the taskbar. Therefore I can only conclude that you are not using an MDI child form and that your solution is to start doing so.
How do I show a MDIChild Form always on top of other MDIChild Forms ?
I have set TopMost property of the ChildForm to True, But the form still behaves the same way...
I have tried to set TopLevel property of ChildForm to True and got the error message... "Top-level Style of a Parented control cannot be changed."
How do I achieve this.
Thanks
A better solution that doesn't requiring changing every other form: - declare the new toolbox as a control of the Main Parent (this):
fForm fFormObj = new fForm();
fFormObj.TopLevel = false;
this.Controls.Add(fFormObj);
fFormObj.Parent = this;
fFormObj.TopMost = true;
fFormObj.Show();
The framework apparently does not support MDI child windows owning each other so you have to simulate that behavior yourself:
static Form f1 = new Form();
static Form f2 = new Form();
static Form f3 = new Form();
[STAThread]
static void Main()
{
f1.IsMdiContainer = true;
f2.MdiParent = f1;
f3.MdiParent = f1;
f1.Show();
f2.Show();
f3.Show();
f2.Activated += new EventHandler(f2_Activated);
Application.Run(f1);
}
static void f2_Activated(object sender, EventArgs e)
{
f3.Activate();
}
I generally just make owned forms not be MDI child forms. They don't stay in the MDI container, but at least they stay in front.
Perhaps the reason this limitation exists is because of the strange or ambiguous desired behavior when the MDI child that is the owner is maximized within the container. the above code will allow the owned form to go behind the maximized parent if you click on it in this case. If you have it outside the container, though, then it will remain visible.
//Edit
Since only one of your MdiChild form needs to be focused, try the following:
In the MdiChildActivate event re-focus or re-activate the required window as the activated child window.
You could also use the Deactivated event to enforce the re-focusing of the concerned child window.
When you create the form and show it also append a call to focus method.
ChildForm.Focus()
Setting the focus should make it topmost.
Hope it helps.