C#

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Re: NotifyIcon and ContextMenu Bug ?? Nish Nishant23-May-02 1:34 Nish Nishant 23-May-02 1:34  See if this article helps. Else post some code snippets. http://www.codeproject.com/csharp/trayiconmenu01.asp Nish Regards, Nish Native CPian. Born and brought up on CP. With the CP blood in him. Re: NotifyIcon and ContextMenu Bug ?? 23-May-02 1:57 23-May-02 1:57  This article does't cover this I think Nish... Too bad I can't attach a file to this post. But if you want to try it, or anyone else, just create a blank C# project, create a notifyicon, create a contextmenu with a child menuitem that has a childmenuitem on it's own. Now attach a popup event to the first menuitem (the one that contains a child). If you now attach this context menu to the form, this popup event fires, but if you attach it to the notifyicon, the event doesn't fire at all Re: NotifyIcon and ContextMenu Bug ?? 2sky23-May-02 2:05 2sky 23-May-02 2:05  If you make sure the trayicons' "Icon" property is set to a valid icon, you should be able to copy-paste the code below in an empty C# project: using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; namespace NotifyMenu { public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.NotifyIcon TrayIcon; private System.Windows.Forms.ContextMenu MnuContext; private System.Windows.Forms.MenuItem MnuItem1; private System.Windows.Forms.MenuItem MnuItem2; private System.ComponentModel.IContainer components; public Form1() { InitializeComponent(); } protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows Form Designer generated code private void InitializeComponent() { this.components = new System.ComponentModel.Container(); System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1)); this.TrayIcon = new System.Windows.Forms.NotifyIcon(this.components); this.MnuContext = new System.Windows.Forms.ContextMenu(); this.MnuItem1 = new System.Windows.Forms.MenuItem(); this.MnuItem2 = new System.Windows.Forms.MenuItem(); // // TrayIcon // this.TrayIcon.ContextMenu = this.MnuContext; this.TrayIcon.Icon = ((System.Drawing.Icon)(resources.GetObject("TrayIcon.Icon"))); this.TrayIcon.Text = "NotifyMenu Tray"; this.TrayIcon.Visible = true; // // MnuContext // this.MnuContext.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] { this.MnuItem1}); // // MnuItem1 // this.MnuItem1.Index = 0; this.MnuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] { this.MnuItem2}); this.MnuItem1.Text = "Item 1"; this.MnuItem1.Popup += new System.EventHandler(this.MnuItem1_Popup); // // MnuItem2 // this.MnuItem2.Index = 0; this.MnuItem2.Text = "Item 2"; // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.ClientSize = new System.Drawing.Size(292, 266); this.ContextMenu = this.MnuContext; this.Name = "Form1"; this.Text = "Form1"; } #endregion [STAThread] static void Main() { Application.Run(new Form1()); } private void MnuItem1_Popup(object sender, System.EventArgs e) { MessageBox.Show(this, "Event Fired"); } } } Component staying alive Oyvind Bratland22-May-02 20:32 Oyvind Bratland 22-May-02 20:32  I am looking for something (in .NET and c#) like the good old ActiveX EXE: a component that loads its data at the first instantiation, but stays alive and doesn't have to be loaded the next time. How can this be done in .NET with C#? -Øyvind Any sources of C# dlhson22-May-02 16:47 dlhson 22-May-02 16:47  I have an exercise: Write any program in C#, but it must manage database. Examples: Program manage air flights, or manage trains, or manage a company... Up to now, I don't know any things of C# ( I knew C++, MFC, Java before) Can you give me any source code of C# about my problem that you have. Thanks Hung Son A Vietnamese student i-g.hypermart.net dlhson2001@yahoo.com Re: Any sources of C# Nick Parker22-May-02 17:25 Nick Parker 22-May-02 17:25  There are all kinds of articles on here that describe how to do database work within C#. If you have a particular problem let someone know. I highly dought that you will find someone to do your exercise without pay. Nick Parker Actually, real programmers don't need the enter key- they just type in 00001101." Re: Any sources of C# Nish Nishant22-May-02 18:18 Nish Nishant 22-May-02 18:18  http://www.codeproject.com/useritems/csadoread01.asp http://www.codeproject.com/useritems/csadodbintro01.asp Nish Regards, Nish Native CPian. Born and brought up on CP. With the CP blood in him. Re: Any sources of C# Rickard Andersson2022-May-02 21:07 Rickard Andersson20 22-May-02 21:07  Nish Are you sick? You always used to have the links click-able! Rickard Andersson@Suza Computing ICQ#: 50302279 (Add me!) E-mail: nikado@pc.nu I'm from the winter country SWEDEN! Re: Any sources of C# Nish Nishant22-May-02 21:21 Nish Nishant 22-May-02 21:21  Rickard Andersson wrote: You always used to have the links click-able! I am getting old, Rickard! Nish Regards, Nish Native CPian. Born and brought up on CP. With the CP blood in him. Re: Any sources of C# SimonS24-May-02 3:36 SimonS 24-May-02 3:36  Here's an article on a data abstraction component that'll help you out with connecting to and using a database. HTH Cheers, Simon "Every good work of software starts by scratching a developer's personal itch.", Eric S. Raymond Awsome Fade-in effect? Brian Olej22-May-02 15:32 Brian Olej 22-May-02 15:32  Hey everyone, I've seen a couple .NET programs with an interesting effect. When the WinForm loads it fades-in instead of just apearing. I've tried a couple different ways to acheive this effect for instance: I set the Winforms defualt opacity to 10 then I set up a timer in which everytime it ticked the opacity would be increased until it reaches 100. My problem is however it doesnt fade in it just apears as 100% opaque. The longer I set the interval the longer it takes for it to apear full opac (thats a givien). Is there a different way of doing this or am I just not doing it right? Re: Awsome Fade-in effect? Nick Parker22-May-02 17:29 Nick Parker 22-May-02 17:29  My screen saver does that, (speaking of which, thats about all it does ) The opacity value needs to increment from 0 to 1. Try changing the value you are going up to, set it initially to 0. I would suggest that you increment your opacity value by .1f , the f is used to denote a floating point value. HTH Nick Parker Actually, real programmers don't need the enter key- they just type in 00001101." Re: Awsome Fade-in effect? Brian Olej23-May-02 9:56 Brian Olej 23-May-02 9:56  Yah, thats actually where I saw it;P thank you. Maintain state in checkboxes inside datagrid 22-May-02 9:33 22-May-02 9:33  Hi, I have a DataGrid that displays 5 rows per page. The first column is a checkbox, that should be checked for the messages that should be approved. The problem is that, each time I change the current page, all checkboxes are unchecked. Is there any way of making them keep checked, so I could mark all the messages in different pages and approve them with just a click? thanks in advance dosgrave SendMessage() Rickard Andersson2022-May-02 6:51 Rickard Andersson20 22-May-02 6:51  Do I have to import SendMessage from user32.dll or is there any similar method in C#? It shouldn't because the WM_ messages aren't defined... but I ask anyway! And if I import the function.. is WPARAM and LPARAM the same (maybe not the same) UINTs in C#?? Rickard Andersson@Suza Computing ICQ#: 50302279 (Add me!) E-mail: nikado@pc.nu I'm from the winter country SWEDEN! Re: SendMessage() James T. Johnson22-May-02 8:56 James T. Johnson 22-May-02 8:56  Yes, you'll have to P/Invoke it. If you look at the Message struct you'll see that WParam and LParam are defined as IntPtr, considering the way that it is used you may want to follow suit. James Simplicity Rules! Re: SendMessage() Rickard Andersson2022-May-02 9:58 Rickard Andersson20 22-May-02 9:58  Okay! So then I would import the SendMessage API like this: int SendMessage(IntPtr window, UINT message, IntPtr wParam, IntPtr lParam); Rickard Andersson@Suza Computing ICQ#: 50302279 (Add me!) E-mail: nikado@pc.nu I'm from the winter country SWEDEN! Re: SendMessage() Rickard Andersson2022-May-02 10:29 Rickard Andersson20 22-May-02 10:29  What is wrong here: [DllImport("user32.dll")] public static int SendMessage(IntPtr window, UINT message, IntPtr wParam, IntPtr lParam); I get "Expected class, delegate, enum, interface or struct" error on the return type of SendMessage API... Rickard Andersson@Suza Computing ICQ#: 50302279 (Add me!) E-mail: nikado@pc.nu I'm from the winter country SWEDEN! Re: SendMessage() James T. Johnson22-May-02 14:32 James T. Johnson 22-May-02 14:32  public static extern ... James Simplicity Rules! Re: SendMessage() Rickard Andersson2022-May-02 21:17 Rickard Andersson20 22-May-02 21:17  What does that extern mean? I have know that before but have formated my brain after installed Windows in it and lost my knowledge... Rickard Andersson@Suza Computing ICQ#: 50302279 (Add me!) E-mail: nikado@pc.nu I'm from the winter country SWEDEN! Variable scope errors Steve Severance22-May-02 4:57 Steve Severance 22-May-02 4:57  I am working on an ASP.NET app. In my global.asax I have a publicly exposed SqlConnection. Everything was working fine until I changed the connection string. Now all the places I used it say "An object reference is required for the nonstatic field, method, or property 'Pharmacy.Global.sqlConnection'". All I did was change the connection string. It is still public. Thanks. Steve Not all who wander are lost... Re: Variable scope errors James T. Johnson22-May-02 8:58 James T. Johnson 22-May-02 8:58  Steve Severance wrote: "An object reference is required for the nonstatic field, method, or property 'Pharmacy.Global.sqlConnection' This error leads me to believe that sqlConnection is not a static field of the global.asax, the quick fix is to make it a static field (public static SqlConnection sqlConnection) HTH, James Simplicity Rules! OnGotFocus Nish Nishant21-May-02 22:33 Nish Nishant 21-May-02 22:33  In MFC we have OnSetFocus(CWnd *pOldWnd) Thus we know which window had previous focus. In .NET we only have this :- protected virtual void OnGotFocus(EventArgs e) So, how do we find out which window just lost focus??? Regards Nish Regards, Nish Native CPian. Born and brought up on CP. With the CP blood in him. Re: OnGotFocus James T. Johnson22-May-02 9:03 James T. Johnson 22-May-02 9:03  You use the LostFocus event? Actually according to the docs you should use Enter/Leave for Controls and Activate/Deactivate for Forms; GotFocus/LostFocus should only be used for updating UICues. Whew, that was a lot of <code> and </code>'s James Simplicity Rules! Re: OnGotFocus Nish Nishant22-May-02 14:42 Nish Nishant 22-May-02 14:42  James T. Johnson wrote: You use the LostFocus event? BLAST!!! That's not what I asked at all!!!! If my control gets focus, I need to figure out which control was previously focussed. I seriously don't see how I can use LostFocus of my control to figure out which other control previously had focus!!!!! James T. Johnson wrote: Whew, that was a lot of <code> and </code>'s Oh yeah???? Blast again!!! Nish Regards, Nish Native CPian. Born and brought up on CP. With the CP blood in him.

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