How to move a form after the setting of C # has no borders

reprint:http://www.cnblogs.com/techmango/archive/2012/03/31/2427523.html

The first is to use the Windows Messaging mechanism to implement:

First, you define the message identity of the mouse button press, and secondly, in the Form1_mousedown method, let the operation system be wrong by pressing the title bar.

1. Define the message ID of the mouse button when left-click

1    Private Const int 0xa1;   // . Define the mouse button and left click 2    Private Const int Htcaption     2;

2. Let the operating system be mistaken to press the title bar

1 Private voidForm1_mousedown (Objectsender, System.Windows.Forms.MouseEventArgs e)2    {   3     //for the pre-application program release mouse4 releasecapture ();5     //send a message to the system to press the mouse button on the title bar6SendMessage ((int) This. Handle,wm_nclbuttondown,htcaption,0);7}

3. Declare the API functions of Windows in the program

1[DllImport ("user32.dll", entrypoint="SendMessageA")]2    Private Static extern intSendMessage (inthwndintWmsg,intWParam,intlParam);3 4[DllImport ("user32.dll")]5    Private Static extern intReleaseCapture ();

The second, by customizing the left mouse button to press the event that occurs:

* First change the form's border style to none so that the form has no title bar
* This effect was achieved using three events: mouse down, mouse bounce, mouse movement
* Change the variable when the mouse is pressed Ismousedown marker form can move with mouse movement
* Change the Location property of the form according to the mouse movement, implement the form movement
* Change variable when mouse bounces Ismousedown mark form can not move with mouse movement
*/

1 Private BOOL false ; 2 Private Point Formlocation;     // Location of form 3 Private Point Mouseoffset;      // press position of mouse

1 Private voidForm1_mousedown (Objectsender, MouseEventArgs e)2 {3     if(E.button = =mousebuttons.left)4     {5Ismousedown =true;6Formlocation = This. Location;7Mouseoffset =control.mouseposition;8     }9}

1 Private void Form1_mouseup (object  sender, MouseEventArgs e)2{3     false ; 4 }

1 Private voidForm1_mousemove (Objectsender, MouseEventArgs e)2 {3     int_x =0;4     int_y =0;5     if(Ismousedown)6     {7Point pt =control.mouseposition;8_x = Mouseoffset.x-Pt. X;9_y = Mouseoffset.y-Pt. Y;Ten  One          This. Location =NewPoint (Formlocation.x-_x, FORMLOCATION.Y-_y); A     } -}

How to move a form (go) After setting no border in C #