Кнопка для закрытия

Кнопка закрытия для сворачивания
Здравствуйте! Подскажите, как сделать, чтоб при нажатии на кнопку закрытия в правом-верхнем углу.

Кнопка закрытия на TabPage
В Oper’е вкладки закрываются кнопками с иконкой крестика. мне потребовалось сделать так же.

Кастомная кнопка закрытия формы
Сделал так, что бы форма закрывалась при нажатии на label с текстом «X», но перед этим нужно.

Класс для закрытия формы
Имеется метод в классе Data.cs под названием fm. using System; using System.Collections.Generic;.

Решение

Заказываю контрольные, курсовые, дипломные и любые другие студенческие работы здесь или здесь.

Что-то вроде лэйбла с крестиком для закрытия
В общем нужно нечто такое. Как будет правильнее это реализовать? Кнопка добавить добавляет новый.

Программа для терминала. Запрет закрытия формы
Ни разу не создавал программы для терминала. Сказали, что там стоит обычный комп с экспишкой.

Как создать button для закрытия form (messagebox)?
Подскажите пожалуйста, как прописать button, чтобы при нажатии на него выходило окно «Вы хотите.

Очередь активности окон для определения — какое окно станет активным после закрытия текущего
По идее в Windows есть записи, в которых говориться, какое окно должно становиться активным, если.

Escape button to close Windows Forms form in C#

I have tried the following:

But it doesn’t work.

Then I tried this:

And still nothing’s working.

The KeyPreview on my Windows Forms form properties is set to true. What am I doing wrong?

8 Answers 8

This will always work, regardless of proper event handler assignment, KeyPreview , CancelButton , etc:

You should just be able to set the Form’s CancelButton property to your Cancel button and then you won’t need any code.

Assuming that you have a «Cancel» button, setting the form’s CancelButton property (either in the designer or in code) should take care of this automatically. Just place the code to close in the Click event of the button.

The accepted answer indeed is correct, and I’ve used that approach several times. Suddenly, it would not work anymore, so I found it strange. Mostly because my breakpoint would not be hit for ESC key, but it would hit for other keys.

After debugging I found out that one of the controls from my form was overriding ProcessCmdKey method, with this code:

. and this was preventing my form from getting the ESC key (notice the return true ). So make sure that no child controls are taking over your input.

You set KeyPreview to true in your form options and then you add the Keypress event to it. In your keypress event you type the following:

key.Char == 27 is the value of escape in ASCII code.

You need add this to event «KeyUp».

You can also Trigger some other form.

E.g. trigger a Cancel-Button if you edit the Form CancelButton property and set the button Cancel.

In the code you treath the Cancel Button as follows to close the form:

By Escape button do you mean the Escape key? Judging by your code I think that’s what you want. You could also try Application.Exit(), but Close should work. Do you have a worker thread? If a non-background thread is running this could keep the application open.

Not the answer you’re looking for? Browse other questions tagged c# winforms or ask your own question.

Linked

Related

Hot Network Questions

Subscribe to RSS

To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. rev 2021.4.16.39093

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.

Windows Forms Remove Close Button

I’m working on a Windows Forms app and I’m wanting to remove the close button from the top. I’m aware of the ControlBox option, but I’m wanting to provide a help button. Is there a way to have the Close button not visible while maintaining the help button?

4 Answers 4

Your best bet may be to subcribe to the FormClosing event of the form like so and cancel the closing action:

The benefit of doing this is that it prevents the user from closing the application from the close button and the taskbar.

Obviously you don’t want to ALWAYS cancel the form from closing. So you will want to set some type of boolean flag that you will check in the event listener as to whether you want the form to be allowed to close or not. Example:

EDIT: If you don’t want to approach the problem that way, and you really do intend to completely remove the close button, then your best bet is to create your own custom title bar. In that case, you set the form’s FormBorderStyle property to None. And you then dock your custom title bar to the top of the form. Here is some sample code from one I made a while back:

As you can see from the image, I also added a background image to the control. Depending on your patience and your requirements, you can use images and PictureBox controls to make this look as much like a standard title bar as you need.

In the above example I placed three buttons on the control with images I found online to represent minimize, maximize, and close. in your case you would simply exclude a close button. I also placed a string on the control with an appropriate font to serve as the title of the window.

Adding the custom title bar to your form is easy.

And then last step is to set up your event listeners for the min and max button clicks:

You may also note that I included events for mouse down, up and move in my title bar. This was so that I could create listeners in my form to move the form when the user clicked and dragged the title bar. This is optional and depends on if you need the user to be able to move your application window.

The added benefit of doing this is that can use the title bar for additional controls. For example, my application was custom written for use on a toughbook style tablet computer with a small touchscreen display. In my application, utilization of the limited space was extremely important. I was able to further modify what I’ve described here to also include menu bar style control directly on the title bar. In addition, I added more buttons to the left of the stand minimize, maximize, and close buttons. Really helped me utilize every square inch of the screen in my application. Couldn’t have done it with the standard title bar.

Override standard close (X) button in a Windows Form

How do I go about changing what happens when a user clicks the close (red X) button in a Windows Forms application (in C#)?

10 Answers 10

You can override OnFormClosing to do this. Just be careful you don’t do anything too unexpected, as clicking the ‘X’ to close is a well understood behavior.

Override the OnFormClosing method.

CAUTION: You need to check the CloseReason and only alter the behaviour if it is UserClosing. You should not put anything in here that would stall the Windows shutdown routine.

One thing these answers lack, and which newbies are probably looking for, is that while it’s nice to have an event:

It’s not going to do anything at all unless you register the event. Put this in the class constructor:

Either override the OnFormClosing or register for the event FormClosing.

This is an example of overriding the OnFormClosing function in the derived form:

This is an example of the handler of the event to stop the form from closing which can be in any class:

To get more advanced, check the CloseReason property on the FormClosingEventArgs to ensure the appropriate action is performed. You might want to only do the alternative action if the user tries to close the form.

as Jon B said, but you’ll also want to check for the ApplicationExitCall and TaskManagerClosing CloseReason:

One situation where it is quite useful to be able to handle the x-button click event is when you are using a Form that is an MDI container. The reason is that the closeing and closed events are raised first with children and lastly with the parent. So in one scenario a user clicks the x-button to close the application and the MDI parent asks for a confirmation to proceed. In case he decides to not close the application but carry on whatever he is doing the children will already have processed the closing event potentially lost information/work whatever. One solution is to intercept the WM_CLOSE message from the Windows message loop in your main application form (i.e. which closed, terminates the application) like so:

This is a pretty commonly asked question. One good answer is here:

If you don’t feel comfortable putting your code in the Form_Closing event, the only other option I am aware of is a «hack» that I’ve used once or twice. It should not be necessary to resort to this hack, but here it is:

Don’t use the normal close button. Instead, create your form so that it has no ControlBox. You can do this by setting ControlBox = false on the form, in which case, you will still have the normal bar across the top of the form, or you can set the form’s FormBorderStyle to «None. If you go this second route, there will be no bar across the top, or any other visible border, so you’ll have to simulate those either by drawing on the form, or by artistic use of Panel controls.

How to hide only the Close (x) button?

I have a modal dialog, and need to hide the Close (X) button, but I cannot use ControlBox = false , because I need to keep the Minimize and Maximize buttons.

I need to hide just Close button, is there any way to do that?

Update: I had permission to disable it, which is simpler 🙂 Thanks all!

5 Answers 5

You can’t hide it, but you can disable it by overriding the CreateParams property of the form.

We can hide close button on form by setting this.ControlBox=false;

Note that this hides all of those sizing buttons. Not just the X. In some cases that may be fine.

Well, you can hide it, by removing the entire system menu:

Of course, doing so removes the minimize and maximize buttons.

If you keep the system menu but remove the close item then the close button remains but is disabled.

The final alternative is to paint the non-client area yourself. That’s pretty hard to get right.

If you really want to hide it, as in «not visible», then you will probably have to create a borderless form and draw the caption components yourself. VisualStyles library has the Windows Elements available. You would also have to add back in the functionality of re-sizing the form or moving the form by grabbing the caption bar. Not to mention the system menu in the corner.

In most cases, it’s hard to justify having the «close» button not available, especially when you want a modal form with minimizing capabilities. Minimizing a modal form really makes no sense.

Well you can hide the close button by changing the FormBorderStyle from the properties section or programmatically in the constructor using:

then you create a menu strip item to exit the application.

Not the answer you’re looking for? Browse other questions tagged c# winforms or ask your own question.

Linked

Related

Hot Network Questions

Subscribe to RSS

To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. rev 2021.4.16.39093

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.