c# - Drawn objects not drawing in correct position -


i trying make paint program except have major problem, want draw square click mouse, except shape not drawing in right place, here code: 

using system; using system.collections.generic; using system.componentmodel; using system.data; using system.drawing; using system.linq; using system.text; using system.threading.tasks; using system.windows.forms; namespace paint_program {     public partial class form1 : form     {          int mousex;         int mousey;          public form1()         {             initializecomponent();            }          private void form1_mouseclick(object sender, mouseeventargs e)         {             mousex = cursor.position.x;             mousey = cursor.position.y;             system.drawing.solidbrush mybrush = new system.drawing.solidbrush(system.drawing.color.red);             system.drawing.graphics formgraphics;             formgraphics = this.creategraphics();             formgraphics.fillrectangle(mybrush, new rectangle(mousex, mousey, 20, 20));             mybrush.dispose();             formgraphics.dispose();           }          private void form1_load(object sender, eventargs e)         {          }          private void rectangleshape1_click(object sender, eventargs e)         {          }          private void test_click(object sender, eventargs e)         {             //testing              console.writeline("x:" + mousex);             console.writeline("y: " + mousey);         }     } }

i know how solve problem, , happy if 1 me :d

in code using coursor.position property provides cursor position in screen coordinates:

http://msdn.microsoft.com/en-us/library/system.windows.forms.cursor.position(v=vs.110).aspx

what interested in coordinates of cursor relative window. in event handler can access using mouseeventargs e method parameter new rectangle(e.x, e.y, 20, 20)

below modified version of form1_mouseclick event handler assume works expected:

private void form1_mouseclick(object sender, mouseeventargs e)     {         mousex = cursor.position.x;         mousey = cursor.position.y;         system.drawing.solidbrush mybrush = new system.drawing.solidbrush(system.drawing.color.red);         system.drawing.graphics formgraphics;         formgraphics = this.creategraphics();         formgraphics.fillrectangle(mybrush, new rectangle(e.x, e.y, 20, 20));         mybrush.dispose();         formgraphics.dispose();     }

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