I am building winform application without any form shown (opacity of form is 0 and ShowInTaskbar property is false). It is accessible only from tray Notify icon. When users clicks with left mouse button on it, the contextMenustrip menu will be show. Because I want to detect LEFT mouse button click I can't use ContextMenu Property of NotifyIcon.
I would like, that if users clicks whenever out of the menu, it should hide. I don't have any idea how I can do that...
If I have shown form, I could detect Deactivate form event and then hide my menu, but in described situation it looks harder.
1) Instead of setting opacity to 0 better set WindowState = FormWindowState.Minimized
2) You cant detect mouse clicks outside of your program as they are controlled by other programs or your OS, but handling Leave or MouseLeave event should help you
Related
I've made my own custom ownerdrawn button control, inherited from the Button class itself. I draw the control all by myself in the OnPaint override procedure, this includes painting the background of the button, drawing its borders, text and image.
I also need to incorporate the capability for the button to show an Active color border in case the button has focus, or is defined as the AcceptButton by the parent form. For focus, I use this.ContainsFocus to know if the button currently has focus.
How to know if my button control is defined as the default AcceptButton on the parent form, so I can draw the active border color around it accordingly? I don't see any inherited property in the Button class to find this out.
Thanks.
(NET Compact Framework 3.5, Windows CE 6.0)
I want to hide mouse cursor.
So, I use Curosr.Hide()
I have two forms, Form1, Form2.
The size of Form2 is smaller than Form1.
PictureBox1 is in Form1.
When PictureBox1 is clicked, Form2 will be opened. (modal)
At this point, the mouse cursor suddenly appears outside area of Form2.
MouseDonw PictureBox1 -> Form2.ShowDialog -> Show MouseCursor
I have never done Cursor.Show()
Why does the mouse cursor appear?
Added the following
I moved Form2.ShowDialog() from 'MouseDown Event' to 'MouseUp Event'. then it is resolved. Why?
First, form show and other 'actions' usually are done with a mouse click event. That is fired after mouse down and mouse up.
If you break the normal sequence, ie show a form on a mouse down event, the GUI is in 'Mouse down/move' mode, for example to drag an element or draw a line.
As each element can show/hide the mouse cursor, the Windowing System recognizes youre Cursor Hide on the second form, but the first form still shows the mouse cursor as the Mouse Up event is not done.
If you would like to know more about the Basics, you should look at a native WndProc and how are Window Messages are handled. Programming Windows by Charles Petzold is still the bible for Windows programming.
I have a Windows Form in C# with 4 buttons with different states that I use as a menu.
What is the best way to use/implement the different button states.
Normal --> Mouse Enter, Mouse Leave and Mouse click. On click, that specific button should stay the clicked color and only change back to normal once a different button is clicked. Clicked color should also not change again on mouse enter or mouse leave. Should be flat buttons.
Thanks
change background of all buttons to default on click.
Then apply the Required backrgound to the button which triggered the click event by using the sender variable of the event
I've created a form that's maximized over the entire screen.
Within that form, and sized to fill the entire form, I've placed a panel with background color set to Red. The form's TransparencyKey is set to Red.
Therefore, the Panel is like a "keyhole" - you can see the desktop that's directly underneath it.
When the user clicks on the panel, OR, presses a key on the keyboard, I want to take action.
But, because the panel is completely transparent, when it is clicked or a key is pressed, nothing happens. If I make the panel non-transparent (setting it's background color to Blue, for example), it does respond to clicks.
What's the best way to get the panel to respond to clicks and keypresses?
Do I have to hook all mouse an keyboard events on the entire system or is there a simpler way?
The panel does not take in text input, you can set your main form to handle the keypress event.
this.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.form_KeyPress);
http://screensnapr.com/v/VovWAi.png
As for getting the mouse location on your panel, you can use the mouseclick event
this.panel1.MouseClick += new System.Windows.Forms.MouseEventHandler(this.panel1_MouseClick);
http://screensnapr.com/v/DB3kCQ.png
I have tested it, and it works on a fullsize transparent panel
I've discovered that I can use GetAsyncKeyState to respond to both keypresses and mouse clicks.
[DllImport("user32.dll")]
public static extern int GetAsyncKeyState(System.Windows.Forms.Keys vKey);
Then, I can call GetAsyncKeyState(Keys.LButton) and GetAsyncKeyState(Keys.Escape), for example. Much simpler than hooking all keyboard and mouse events.
I created a movable panel in WinForms. I use a ToolStrip as a titlebar in the panel. I'll use the ToolStrip to move the panel as well as indicating the panel is "active" or not. So when the panel is active, I want to change the ToolStrip's BackColor to Red.
UPDATE: The panel will host other controls, such as a listview. I want the panel being shown as "active" when the hosted control get focus, kind like the behavior of a normal window, whereas the window becomes the panel, and the titlebar becomes the ToolStrip.
When the panel is considered as "active"
hosted control get focus
ToolStrip being MouseDown/MouseClick
ToolStrip being dragged by mouse
The idea is capturing ToolStrip's Enter/Leave event to change the color, but it seems those events are never fired.
Are those events truly never fired? Should I capture other events?
mmmm there are a few ways to do this I guess.
You could use hook into the IMessageFilter message and see if its over your toolstrip/panel and then act accordingly (WM_LBUTTONDOWN, WM_MOUSEMOVE, WM_LBUTTONUP etc - see windows documentation on WIndows Messages for hex message codes for all windows messages). There are many examples about - for example: How to detect if the mouse is inside the whole form and child controls?
Setting a boolen based on whether active or not, an override in the paint can allow the colour settings - or simply flip them along with/instead of the boolean. Same for moving, set a boolean for move active/or not - and then allow WM_MOUSEMOVE to move the form/panel (or not) as needed.