I need some comments and suggestions on getting MCAD certification(Microsoft Certified Application Developer). Or do you suggestion getting others? Here is the information I found: http://www.microsoft.com/learning/mcp/mcad/requirements.asp Tell me your personal experiences and your steps getting it, and learning resources. Thanks!!!

Hi, thanks for the help, but I didn't expect it to be this complicated.;) This on-screen keyboard is written in Visual C#, so each Button represents a key. Therefore, when the user touch the button on the screen, it's like you click the button using mouse. So the SomeKey_Click() event fired. My problem is how do I tell system that SomeKey is pressed without physically type the key. Thanks again!

So how do I sent the keyboard message as if user has press the key on keyboard when he/she really touchs the mointor. Thank!

How do you send the messages to Windows message queue and what's Windows message queue? I am emulating a keyboard with all letters, digits, and a enter key. Correction: What should I have in MouseDown or Click event b/c the keys are clicked by touch on the screen.

Hi, I am trying to write a custom user control which is a "On screen keyboard" used for touch screen monitor. So when user press a key on the "On screen keyboard", the program knows as if the key on the keyboard is pressed. What should I have in KeyPress event for each keyboard character? or there are some other ways to do it? Also, how to loop through all key chars on keyboard? Thank!!!!

Can I do this: private someForm form; if (form == null) form = new someForm(); Also, is form = null when disposed? How do I know if a form is disposed? Thank!

Yes, I mean the MDI child form, because it can be loaded multiple times. We just want to have one form at a time.

Hi guys, I guess it's a pretty easy question for you. How do you check if a Windows Form (object) is already loaded in C#? Thanks!

Ok, I am using Visual Studio .NET & .NET Framework 1.0, and I want to upgrade it to .NET 1.1. I've already downloaded and installed the .NET Framework 1.1 redistribute package, but VS .NET doesn't seem to recognized the new verison and I am not able to use System.Windows.Forms.FolderBrowserDialog which is only supported in 1.1 version. Help please! Thanks!

Hi, Does anybody know the method of drawing 3D piechart? I mean only the 3D depth part. Example[^] I already have a piechart drawn, and tried to draw the 3D depth by drawing the dumplicated piechart along the Y axis with darker color serval times underneath the top piechart. but the result is not right. see my piechart here[^] I also took a look at the code from http://www.codeproject.com/aspnet/webchart.asp[^] without success. I hope I can solve this problem soon, and post this project to CP. Thank!!!:)

Hello everyone, how do I save and print a graphic created by GDI+, using C#? I just want to save and print the graphic not including the form where graphic was drawn. Thank!!!:)

Hi Bill, thanks for the message! Finally I sloved my problem:)

can you explain this "rad = 6.28 / 360;" Thank you!

Ok, I should explain my problem, I have a piechart(circle or ellipse), and I want to find the middle point of each pie where the percentage text goes. and given the middle point degree of each pie and diameter. Example piechart[^] Can you guys come up with a solution for me please. Thanks!!

Hi, does anybody know the equation fo finding a point with in a cirlce(ellipse) given the degree of the point and the diameter? Thanks!:)

Can you explain please, I really want this control to work. Thank!

hi, I've been coding this PieChart control all day now, just couldn't get it to work, if you know how to write a custom control, plese help me. The main problem I have here is at the OnPaint() the PieChart doesn't draw all the pies except the first pie. What am I missing on writing a custom control here? Complete codes are below or you can download the project here PieChart.cs

using System;
using System.Collections;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Design;
using System.Data;
using System.Windows.Forms;

namespace ColorControl.Controls
{
public class PieChart : System.Windows.Forms.Control
{
// collection
private PieChartItemCollection _Items = new PieChartItemCollection();

    public PieChart() 
    { 
        base.Size = new Size(200, 200); 
        SetStyle( 
            ControlStyles.AllPaintingInWmPaint | 
            ControlStyles.ResizeRedraw | 
            ControlStyles.DoubleBuffer | 
            ControlStyles.UserPaint, 
            true 
            ); 
    } 
     
    public PieChartItemCollection Items 
    { 
        get 
        { 
            return \_Items; 
        } 
        set 
        { 
            \_Items = value; 
            this.Invalidate(); 
        } 
    } 

    protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) 
    { 
        int valueSum = 0; 
        int startDegree = 0; 
        int sweepDegree; 

        // sum of values 
        foreach (PieChartItem item in \_Items) 
        { 
            valueSum += (int)item.Value; 
        } 

        e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; 
        Rectangle rect = new Rectangle(ClientRectangle.X, ClientRectangle.Y, 
            ClientRectangle.Width - 1, ClientRectangle.Height - 1); 

        if (valueSum != 0) 
        { 
            // draw each pie 
            foreach (PieChartItem item in \_Items) 
            { 
                // degree of each pie 
                sweepDegree = (int)(item.Value / valueSum \* 360); 

                SolidBrush brush = new SolidBrush(item.Color);