This question already has answers here:
Load a form without showing it
(8 answers)
Closed 8 years ago.
I have winforms application which has a popup dialog. I need the dialog to popup but without showing itself. This is how I currently do it:
DialogForm myDialog = new DialogForm();
myDialog.Show();
myDialog.Visible = false;
The problem with this method is that for a split second the dialog shows up and then disappears. From a functional point of view it works fine, but it does annoy some users of my application and actually takes the "focus" away from the main form. I've also tried this but it doesn't work:
DialogForm myDialog = new DialogForm();
myDialog.Visible = false;
myDialog.Show();
There has to be a way to create the dialog and run it in the background without having to call "Show()." Thanks for any possible help!
How about doing something like positioning the pop-up window in the left lower corner of the screen?
So even if it's showing for a split second, nobody will still be able to see it.
So before showing your window, write a line such as:
myDialog.Location = new Point(x,y);
// the x,y will be your coordinates of the lower-left margin of Form1
Related
My C# project starts some other processes, which create windows of their own. Displaying all those windows is messy - is there a way to clip/mask these windows (which my project does not own) so only a small portion of them is displayed and able to be interacted with?
E.g. something one'd pass a wHnd together with a Rectangle.
Is this a thing that exists?
Very, very many thanks to #Michael Gunter, MDI indeed allows to make such constructions!
For anyone who stumbles into this question years from now, here's what works:
IntPtr finalhWnd; // the window to clip's handle
Form mdiP = new MDIParent(); // MDIParent is custom, just a simple form without a border
mdiP.Show();
SetParent(finalhWnd, mdiP.Handle); // set the target form as a child of our own
SetWindowPos(finalhWnd, (IntPtr)0, -30, -50, 100, 100, 0x0200); // clip a 100x100 block, starting at (30,50)
Application.Run();
Here's an example of using it to clip the borders off of a Chrome instance:
This question already has answers here:
Center a C# Windows Form inside another window
(1 answer)
Show a child form in the centre of Parent form in C#
(19 answers)
Show Dialog box at center of its parent
(5 answers)
Closed 1 year ago.
I want to make classic a modal Window with dark background.
I don't know why this is so hard to make it. I tried a lot way to do it, however it just doesn't fit with my needs.
I have 10+ modal Windows and they are customized Forms which contain grids, charts, etc.
They are not 'OK, No, Cancel' stuff.
My code basically creates another Form with black background between parent Form and modal Form:
Form f = new Form();
f.BackColor = Color.Black;
f.Size = this.Size;
f.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
f.StartPosition = this.StartPosition;
f.Opacity = 0.6;
f.Show();
notificationSGA nsga = new notificationSGA(Cursor.Position);
nsga.ShowDialog();
f.Dispose();
f.Close();
Above code works perfectly fine. However if I move the parent (master) Form to somewhere instead of center of the screen, the black Form still appears at the center of the screen, not centered to the parent Form.
How can I solve my issue?
Note: This is not duplicated topic with below question:
How to show a pop up message with dark background
Change the .StartPosition to .Manual so that you can set .Location to where your reference form is.
Also, change the owner in the .Show() method for both new Forms.
Form f = new Form();
//(...)
f.Size = this.Size;
f.StartPosition = FormStartPosition.Manual;
f.Location = this.Location;
//(...)
f.Show(this);
using (var nsga = new notificationSGA(Cursor.Position)) {
nsga.StartPosition = FormStartPosition.CenterParent;
nsga.ShowDialog(f);
}
f.Dispose();
I have an game as an Winform in Full Screen (no borders), maximized. But I want to present them on an different screen, like a beamer and control it on the original screen, so I need the same screen, opened twice:
One at my own screen Maximized, no borders
One at the second screen, normal state with title bar.
I'm quite sure, I'm thinking about this too easily. What I tried is:
new game().Show();
new game().Show(WindowState = FormWindowState.Normal));
But then It says:
Argument 1: cannot convert from 'System.Windows.Forms.FormWindowState' to 'System.Windows.Forms.IWin32Window'
So, is this hard to do?
Try this:
game g1 = new game();
g1.Show();
game g2 = new game();
g2.WindowState = FormWindowState.Normal;
g2.Show();
What you tried doesn't work because Form.Show() expects either nothing or another IWin32Window (typically another Form) as an argument, and you're passing a FormWindowState.
Note that, while this shows you how to open two forms of the same class with different window states, it doesn't show you how to make two different forms show the same game content at once, which will be much more involved.
This question already has answers here:
Transparent images with C# WinForms
(6 answers)
Closed 9 years ago.
Having two overlapping PictureBox controls, I'm trying to make the transparent areas of the picture box let the controls below (in the z-order) being visible.
Even after trying what Microsoft suggests, I cannot get the desired result.
This is what I currently have:
And this is what I want:
So my question is:
Any way to achieve my desired result with two PictureBox controls (or with another way) that overlap each other and let the transparent areas shine through?
Update:
Actually I solved it by using this answer to the the SO question "Transparent images with C# WinForms".
Try this
private void Form1_Load(object sender, EventArgs e)
{
// Transparent background...
pictureBoxOverlay.BackColor = Color.Transparent;
// Change parent for overlay PictureBox...
pictureBoxOverlay.Parent = pictureBoxMain;
// Change overlay PictureBox position in new parent...
// pictureBoxOverlay.Location = new Point(0, 0);
}
Result
Link
As far as I know, the transparency of a control depends on its parent control (As noted in the link you've given), meaning that in order to have the effect you are looking for, you need to have one picture box nested into another picture box which is impossible given that a picture box is not a container.
You can however, use a custom container control instead of a picture box for the parent image.
The most basic control would be a panel. Just set the background image of the control and put the second picture box in it.
Another solution, would be to use one single picture box and manage the rendering manually.
This is by far the best solution as the pseudo-simulated transparency of the other method is quiet inefficient.
i was just wondering what i need to research to be able to have a programme that is in the system tray, when the user clicks the programme icon, just above the system tray a small text area appears allowing the user to type in a search condition. There is plenty of resources for c# and getting your programme in the system tray, but then it just opens as normal, which is not quite what i am looking for.
Thanks
One way to accomplish this is to use a standard WinForms window which contains a single text box and has no border. This window can then be displayed and positioned as normal (likely using many of the existing samples) but will appear as a floating text box.
var form = new MyTextBoxForm();
form.FormBorderStyle = BorderStyle.None;
form.StartPosition = FormStartPosition.Manual;
// position the form
form.ShowDialog();
Handle the NotifyIcon.Click event and show your form in the desired location.
For example:
var screen = Screen.PrimaryScreen;
form.Left = screen.WorkingArea.Right - form.Width;
form.Top = screen.WorkingArea.Bottom - form.Height;
Maybe with this Make your program in the system + add a menu you could try editing the menu, like you'd do a regular menu with toolstrips.... and change the label by a textbox.
Just a random idea.