hi,

i want to modify my form what i want is in my application there shold be a pannel at left side and tree view shold be in side of that and i can move the pannel when i want

thanks

elby

Hello Elby,

The following code can let you move control smoothly in run time. Please take a look.
public partial class Form1 : Form
{
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HTCAPTION = 0x2;
[DllImport("User32.dll")]
public static extern bool ReleaseCapture();
[DllImport("User32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

public Form1()
{
InitializeComponent();
this.panel1.MouseDown += new MouseEventHandler(panel1_MouseDown);
}

void panel1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(this.panel1.Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
}
}
}
The example shows how to call win32 api “SendMessage�and “ReleaseCapture�to move the panel1 control. If you have anything unclear, please feel free to tell me.

Sincerely,
Kira Qian

---

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
Welcome to the All-In-One Code Framework!

Elby,

there is no build-in mechanism for moving contols on forms. you need to do this yourself, possibly with handling mouse-down/up/move messages (events).

WM_HOPETHISHELPS
-thomas woelfer

---

http://www.die.de/blog

Hello Elby,

The following code can let you move control smoothly in run time. Please take a look.
public partial class Form1 : Form
{
public const int WM_NCLBUTTONDOWN = 0xA1;
public const int HTCAPTION = 0x2;
[DllImport("User32.dll")]
public static extern bool ReleaseCapture();
[DllImport("User32.dll")]
public static extern int SendMessage(IntPtr hWnd, int Msg, int wParam, int lParam);

public Form1()
{
InitializeComponent();
this.panel1.MouseDown += new MouseEventHandler(panel1_MouseDown);
}

void panel1_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
ReleaseCapture();
SendMessage(this.panel1.Handle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
}
}
}
The example shows how to call win32 api “SendMessage�and “ReleaseCapture�to move the panel1 control. If you have anything unclear, please feel free to tell me.

Sincerely,
Kira Qian

---

Please remember to mark the replies as answers if they help and unmark them if they provide no help.
Welcome to the All-In-One Code Framework!