C # examples of QQ adsorption function

I found a lot of information on the Internet and found it was not easy to use. I tried to pull it for half a day. I hope it will help you.

Step 1: Pull the time Timer from the components in the toolbox to the winform to implement this function. The following figure shows the attributes of the Timer component, I put the control on the form and it has not been modified. For details, see

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Step 2: Add the following code to the loading time of the form. The code is relatively simple and can be understood at a glance. I will not explain it here.

// Form loading event private void Communicate_Load (object sender, EventArgs e) {// C # imitate QQ adsorption function Timer StopRectTimer = new Timer (); StopRectTimer. tick + = new EventHandler (timereffectick); StopRectTimer. interval = 100; StopRectTimer. enabled = true ;}

Step 3: trigger a time event LocationChanged when the location Value of the form occurs in the table.) The LocationChanged event calls a method. The Code is as follows:

// Trigger the event private void Communicate_LocationChanged (object sender, EventArgs e) {this. mStopAnthor ();} private void mStopAnthor () {if (this. top <= 0) {StopAanhor = AnchorStyles. top;} else if (this. left <= 0) {StopAanhor = AnchorStyles. left;} else if (this. left> = Screen. primaryScreen. bounds. width-this. width) {StopAanhor = AnchorStyles. right;} else {StopAanhor = AnchorStyles. none ;}}

Step 4: This is the last step and the most important step. The Tick event in the time component timer has the following code: Add a piece of code before the event. The Code is as follows:

Internal AnchorStyles StopAanhor = AnchorStyles. none; // This code must be added. // This method is triggered whenever this time component passes through the specified event interval. private void timer1_Tick (object sender, EventArgs e) {if (this. bounds. contains (Cursor. position) {switch (this. stopAanhor) {case AnchorStyles. top: this. location = new Point (this. location. x, 0); break; case AnchorStyles. left: this. location = new Point (0, this. location. y); break; case AnchorStyles. right: this. location = new Point (Screen. primaryScreen. bounds. width-this. width, this. location. y); break ;}} else {switch (this. stopAanhor) {case AnchorStyles. top: this. location = new Point (this. location. x, (this. height-2) * (-1); break; case AnchorStyles. left: this. location = new Point (-1) * (this. width-2), this. location. y); break; case AnchorStyles. right: this. location = new Point (Screen. primaryScreen. bounds. width-2, this. location. y); break ;}}}

In this way, the QQ adsorption function is implemented. I hope this example will help you.

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