C#

private bool trap = false;
private void pictureBox1_MouseMove(object sender,
        System.Windows.Forms.MouseEventArgs e) {
    trap = true;
}

// http://www.thescripts.com/forum/thread501540.html
private void Form1_MouseMove(object sender,
        System.Windows.Forms.MouseEventArgs e) {
    if (trap) {
        if (e.X < pictureBox1.Left) {
            mouse_event(MouseFlags.Move, 1, 0, 0, UIntPtr.Zero);
        }
        if (e.X > pictureBox1.Left + pictureBox1.Width) {
            mouse_event(MouseFlags.Move, -1, 0, 0, UIntPtr.Zero);
        }
        if (e.Y < pictureBox1.Top) {
            mouse_event(MouseFlags.Move, 0, 1, 0, UIntPtr.Zero);
        }
        if (e.Y > pictureBox1.Top + pictureBox1.Height) {
            mouse_event(MouseFlags.Move, 0, -1, 0, UIntPtr.Zero);
        }
    }
}

const int MK_LBUTTON = 0x0001;
enum Messages {
    WM_LBUTTONDOWN = 0x0201,
    WM_LBUTTONUP = 0x0202
}
[Flags]
enum MouseFlags {
    Move = 0x0001,
    LeftDown = 0x0002,
    LeftUp = 0x0004,
    RightDown = 0x0008,
    RightUp = 0x0010,
    Absolute = 0x8000
}
[System.Runtime.InteropServices.DllImport("User32.dll")]
static extern int SendMessage(IntPtr hWnd, Messages uMsg,
                              int wParam, IntPtr lParam);
[System.Runtime.InteropServices.DllImport("User32.dll")] 
static extern void mouse_event(MouseFlags dwFlags, int dx,
                               int dy, int dwData, UIntPtr
                               dwExtraInfo);

[System.Runtime.InteropServices.DllImport("user32")]
static extern int SetCursorPos(int x, int y);

KPThor wrote:

Is something like this possible where the value of a variable is used instead of MenuBarEdit?

KPThor wrote:

string mbitem = MenuBarEdit;
this.mbitem = new System.Windows.Forms.MenuItem();

KPThor wrote:

When the parser reads the xml file and comes to <menubar item="File"> and <menubar item="Edit"> it can place those menu items in the menubar.

string FName = string.Empty;
object temp = reader["FirstName"];
if (temp != DBNull.Value)
    FName = (string)temp;

kallileo wrote:

string FName = (string)reader["FirstName"];
string LName = (string)reader["LastName"];
string BPhone = (string)reader["BusinessPhone"];

<code>
if (reader.IsDBNull(reader.GetOrdinal("FirstName"))
{
     FName = null; // Or String.Empty, as you see fit.
}
else
{
     FName = (string)reader["LastName"];
}<code>

Le Centriste wrote:

You have to

string FName = reader["FirstName"].ToString();

<br />
string FName = reader["FirstName"] as string;<br />
string LName = reader["LastName"] as string;<br />
string BPhone = reader["BusinessPhone"] as string;<br />

m@u wrote:

Hi

Since string is a reference type you could also do it like this:


string FName = reader["FirstName"] as string;
string LName = reader["LastName"] as string;
string BPhone = reader["BusinessPhone"] as string;


greets
M@u

Colin Angus Mackay wrote:

Curiously, if you look at what Convert.ToString actually does, it just boils down to the same as:

string FName = reader["FirstName"].ToString();

So, is DBNull.Value.ToString() the value that you really want back?

Software_Specialist wrote:

The above code again makes the form not responding after i press the start button.