---------------------------------------------------------------- Slider VBX Control Copyright 1993 Northeast Data Corp. All Rights Reserved This is the DEMO version of the control. It has the same characteristics as the commercial version, except for a notice that appears each time the control is loaded. ---------------------------------------------------------------- Release 1.0 August 1993 This document describes the Slider Custom VBX Control. CONTENTS 1. Product Description 2. Legal Information 3. Installation 4. Usage 5. Support ---------------------------------------------------------------- 1. Product Description The Slider VBX Control is a Microsoft Windows DLL designed and implemented in compliance with Microsoft standards for interfacing with Visual Basic. The control appears to the end user as a slider similar to those used on audio/video equipment such as stereos, tuners, and amplifiers. To the application programmer, the interface to the slider is similar to the one for the MS Windows standard scroll bar. The programmer can set a range of values that will be fed back to the application as the end user adjusts the position of the slider on its scale. Being a VBX control, the programmer can add the Slider Control to the tool palette in Visual Basic. This allows use of the control in Visual Basic forms. Since Visual C++ supports use of VBX controls, the slider control can also be used in the Visual C++ environment. Use of the Slider Control in a finished application requires the Slider Control DLL (slider.vbx) to be installed with the application. This is true of all custom controls written for MS Windows. There are properties available that allow the programmer to control the behavior and appearance of the Slider Control. The slider can appear in a horizontal or vertical orientation. A horizontal slider can have top "tick marks", bottom tick marks, no tick marks, or tick marks on both the bottom and top. This is also true for vertical sliders, where tick marks are left and right rather than top and bottom. The range of the slider can be set to any range with low and high values varying from 0 to 32767. All communication between the Slider Control and the application is performed using the standard Windows message mechanism for controls. Design of the Slider Control message mechanism allows the application to continuously monitor the setting of the control. ------------------------------------------------------------------- 2. Legal Information The purchaser of the Slider Control is allowed to use it and distribute it in applications without paying any royalty, and without printing or displaying a copyright notice for the control. This only includes distribution of the Slider Control DLL. It does not include distribution of documentation that comes with the Slider Control. The purchaser of the Slider Control may distribute the control DLL with applications that are networked (multiple users accessing the DLL from a file server) without paying any license fees to Northeast Data Corp. All information about purchasing the control can be found during the initial loading of the VBX. ------------------------------------------------------------------- 3. Installation Create a "slider" directory on your hard disk and copy all files from the distribution disk to the directory. Start Visual Basic or the Visual C++ App Studio applications and use the custom control installation function to install the slider.vbx control. ------------------------------------------------------------------- 4. Usage PROPERTIES ---------- BackColor - Sets the background color. CtlName - Name of the control. DragIcon - Name of the icon that will appear when the control is dragged. DragMode - Normal or automatic. Height - Height of control. Index - Index of control. Left - Left position. Max - Maximum slider value. This must be greater than the minimum slider value. Min - Minimum slider value. This must be less than the maximum slider value. Pos - Current slider position. This must be a value between or including the current minimum and maximum values of the slider. Range - Normal (0) or Inverted (1). If inverted, a vertical slider will increase in value from top to bottom and a horizontal slider will increase from right to left. TabIndex - Control tab order. TabStop - If this is turned on (1 instead of 0), the slider can be activated by tabbing to it with the TAB key. Tag - Control tag. TickMarks - Left, right, none or both for vertical sliders. Top, bottom, none or both for horizontal sliders. Top - Top of control window. Visible - Visible/Invisible attribute. Width - Width of control. EVENTS ------ These events work the same way as for other VBX controls. DblClick DragDrop DragOver GotFocus KeyDown KeyUp LostFocus ThumbPos ----------------------------------------------------------------------- 5. Support For technical support, call 716-247-5934 from 8:00 a.m to 5:00 p.m Monday through Friday.