{"id":1391,"date":"2019-03-25T17:34:54","date_gmt":"2019-03-25T20:34:54","guid":{"rendered":"http:\/\/xexeu.elipse.com.br\/pt\/kb33026-dragging-screen-objects-with-the-mouse-at-run-time\/"},"modified":"2021-11-04T16:38:39","modified_gmt":"2021-11-04T19:38:39","slug":"kb33026-dragging-screen-objects-with-the-mouse-at-run-time","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/kb33026-dragging-screen-objects-with-the-mouse-at-run-time\/","title":{"rendered":"KB-33026: Dragging screen objects at run time."},"content":{"rendered":"
\n

Question:<\/span><\/h3>\n

How can I drag screen objects with the mouse at run time?<\/p>\n

Solution:<\/span><\/h3>\n

First of all, in order to solve this you will need to establish which version of Elipse E3<\/a><\/strong> is being used. Then, you will be able to decide how to drag screen objects at run time.<\/p>\n

From version 3.5<\/strong> on, you can create a WhileRunning<\/em> script on the Screen, and subsequently use\u00a0 GetMouseX<\/strong> e<\/em> GetMouseY <\/strong><\/em>methods to retrieve the mouse’s position. For example:<\/p>\n

Sub Screen1_WhileRunning()\r\n\tItem(\"Circle1\").X = FromPixelX(Application.GetMouseX())\r\n\tItem(\"Circle1\").Y = FromPixelY(Application.GetMouseY())\r\nEnd Sub\r\n<\/code><\/pre>\n
FromPixelX<\/em> and FromPixelY<\/em> methods convert coordinates from pixels to himetric.<\/p>\n
NOTE:<\/strong> Please bear in mind that this kind of script (WhileRunning<\/em>) can hinder the application’s performance, depending on the case.<\/p>\n
As for prior versions of the software<\/strong>, there are two possibilities. You can:<\/p>\n
    \n
  1. Create a Translation or Rotation Animation for the object. The downside<\/strong> is that the object’s limit is the animation’s path. On the other hand, the upside<\/strong> is that in this case the mouse will actually drag the object; or<\/li>\n
  2. Change the object’s position via script. The upside is that can actually move the object to any position on screen.<\/li>\n<\/ol>\n
    To do so, follow these procedures:<\/p>\n<\/div>\n
    1. Create a script in MouseDown <\/span>event of the object to be dragged. Set the object’s Name <\/span>property to an Internal Tag (using the tag as a global variable). For example:<\/p>\n
    \u00a0\u00a0\u00a0\u00a0\u00a0 Sub Rectangle1_MouseDown(Button, ShiftState, MouseX, MouseY)<\/span>
    \u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 Application.Item(\"InternalTag1\").Value = Name<\/span>
    \u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 'Saves the exact position where the object was clicked <\/span>
    \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 Application.Item(\"MouseX\").Value = MouseX - X <\/span>
    \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 Application.Item(\"MouseY\").Value = MouseY - Y<\/span>
    \u00a0\u00a0\u00a0\u00a0 End Sub<\/span><\/pre>\n
    2. Create a script in MouseUp <\/span>event of the screen where the object is inserted. In this script, pass the MouseUp<\/span>‘s MouseY <\/span>and MouseX <\/span>variables that have the X <\/span>and Y<\/span> position of the mouse’s cursor to the X and Y properties of the object. For example:<\/p>\n
    \n
    \u00a0\u00a0\u00a0\u00a0\u00a0 dim objname<\/span>
    \u00a0\u00a0\u00a0\u00a0\u00a0 set obj = Application.Item(\"InternalTag1\")<\/span>
    \u00a0\u00a0\u00a0\u00a0\u00a0 objname = obj.Value<\/span>

    \u00a0\u00a0\u00a0\u00a0\u00a0 if objname <> \"\" then<\/span>
    \u00a0 \u00a0 \u00a0\u00a0 \u00a0\u00a0\u00a0 Item(objname).X = MouseX - Application.Item(\"MouseX\").Value<\/span>
    \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0 Item(objname).Y = MouseY - Application.Item(\"MouseY\").Value<\/span>
    \u00a0 \u00a0 \u00a0 \u00a0\u00a0\u00a0 obj.Value = \"\"<\/span>
    \u00a0\u00a0\u00a0\u00a0\u00a0 end if<\/span><\/pre>\n
    Attached to this article is an application developed in Elipse<\/strong> E3 <\/span>version 3.2 build 260 that illustrates the procedures described above.<\/p>\n<\/div>\n
    Attachments:<\/h3>\n
    MouseMove<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
    Question: How can I drag screen objects with the mouse at run time? 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