Personal code repository movable + sliding + rebound button "C # related code"

To achieve the slide function, you need the help of the timer object. To this end, you need to add the code in [Form class constructor:

// You must explicitly declare the timer control for slide to reduce the latency of each call. Mytimer = new timer (); mytimer. interval = inttimerinterval; mytimer. Tick + = new system. eventhandler (this. mytimer_tick );

The following code is bound to the corresponding event of the button you want to add this function:

# Region movable + slip + bounce button "related code" # region variable declaration area // <summary> // you can specify which key you can click to move the button. // </Summary> mousebuttons mousebutton = mousebuttons. right; // pass the current button. Button btntemp = NULL; // The timer used for calculation of sliding. Timer mytimer = NULL; // The trigger interval (in milliseconds) of the timer int inttimerinterval = 20; // The number of frames sliding by the button. The larger the value, the smoother the transition. Static int intnum = 30; // The Temporary Variable int inttimer = intnum for the number of frames; // the time before and after moving. Datetime datbegin, datend; // point poibegin and poiend coordinates before and after movement; // acceleration decreases by a factor of 0.12 // acceleration of resistance; double intb = 0.12; // increase of sliding speed, the larger the sliding speed, the faster the sliding speed. // The acceleration of the last velocity double XV; double YV; // X and Y. Double XA; double ya; // record the position of the current mouse relative to the button. Point mouse_offset = new point (); bool bolmove = false; // whether to allow rebound bool bolreturn = true; # endregion # private void button_mousedown (Object sender, mouseeventargs E) {If (E. button = mousebutton) {btntemp = (button) sender; // bolmove = true; // assign the coordinates of the current mouse relative to the upper left corner of the form to mouse_offset = E. location; // write down the system time. So that the calculation speed is datbegin = datetime. now; poibegin = btntemp. location ;}} private void button_mouseup (Object sender, mouseeventargs e) {If (bolmove & E. button = mousebutton) {// bolmove = false; // write down the coordinates poiend = (button) sender) after the end ). location; datend = datetime. now; # region Acceleration Formula // start to calculate the acceleration of X and Y. // S = vot + 1/2at * t // end speed v = vot + at // when Vo = 0, A = 2 S/(T * t ); V = 2 s/t # endregion int xs = poiend. x-poibegin. x; int ys = poiend. y-poibegin. y; Double T = datend. subtract (datbegin ). totalmilliseconds; XA = (2 * XS)/(T * t); YA = (2 * ys)/(T * t); xv = (2 * XS)/T; YV = (2 * ys)/T; // reset to the default number of frames. Inttimer = intnum; // start the timer control and start to slide slowly... Mytimer. enabled = true;} private void button_mousemove (Object sender, mouseeventargs e) {If (E. button = mousebutton) {bolmove = true; // convert the relative screen coordinates to the coordinates of the relative work area. Int left = pointtoclient (control. mouseposition ). x-mouse_offset.x; int Top = pointtoclient (control. mouseposition ). y-mouse_offset.y; // the left and right sides may cross the border if (left <0) Left = 0; If (left> This. width) Left = This. width-(button) sender ). width; // the upper and lower bounds. If (top <0) Top = 0; If (top> This. height) Top = This. height-(button) sender ). height; (button) sender ). left = left; (button) sender ). top = Top ;}} private void mytimer_tick (Object sender, eventargs e) {// as long as the slide mode is enabled, the mouse (manual) is stopped. If (bolmove) bolmove = false; If (inttimer = 0 | XA = 0 | YA = 0) {mytimer. enabled = false;} else {inttimer --; If (xa <0) btntemp. left = btntemp. left-(INT) (xa x XV * 1000); else btntemp. left = btntemp. left + (INT) (xa x XV * 1000); If (ya <0) btntemp. top = btntemp. top-(INT) (ya * YV * 1000); else btntemp. top = btntemp. top + (INT) (ya * YV * 1000); XA = XA * (1-intb); YA = ya * (1-intb); // the left and right sides may cross the border, after the symbol is changed, it will automatically "rebound" after hitting the wall; If (btntemp. left <0) {btntemp. left = 0; If (bolreturn) {XA =-Xa; xv =-XV ;}} if (btntemp. left> This. width-btntemp. width) {btntemp. left = This. width-btntemp. width; If (bolreturn) {XA =-Xa; xv =-XV ;}// the upper and lower bounds of the IF (btntemp. top <0) {btntemp. top = 0; If (bolreturn) {YA =-Ya; YV =-YV ;}} if (btntemp. top> This. height-btntemp. height) {btntemp. top = This. height-btntemp. height; If (bolreturn) {YA =-Ya; YV =-YV ;}}# endregion # endregion

[By: asion Tang] blog garden label: C #, personal code library