A Spin Edit control with popup trackbar

• Download Demo - 116 kb
• Download source- 8 Kb

• Download latest project and source from my website

Introduction

I've wanted to post an item for some time, so when I started working on this component, I decided it was going to be it. The image editing software "Paint Shop Pro" from Jasc software utilizes a unique combination of an edit, spin, and trackbar functionality. I decided to try to derive my own version of this and this is the result. Check the upper left are on the screenshot. I used VS 2003 but I see no reason why it can't be compiled and used with an earlier version. The only requirement is that IE5 is required because it requires 32 bit calls such as the GetPos32() API.

Using the code

Methods

• int GetValue() - Get the current value
• void SetValue(int nValue) - Sets the current value
• BOOL GetReadOnly() - Gets the readonly state of the edit field
• void SetReadOnly(BOOL fReadOnly) - Sets the readonly state of the edit field
• void GetRange(int& nMin,int& nMax) - Gets the allowed value range
• void SetRange(int nMin,int nMax) - Sets the allowed value range

Styles

• NES_SPIN - Includes the spin control
• NES_POPUP - Includes the button on the far right that pops up a floating trackbar
• NES_LIVEUPDATE - Updates the parent about the value while tracking. NEW
• NES_METER - Includes the small bar underneath the edit field.NEW

Messages

• NEM_GETPOS - Returns the current value as return value
• NEM_SETPOS - Sets the current value. Passed in LPARAM
• NEM_GETRANGE - Returns allowed range. WPARAM and LPARAM are treated as pointers to int's
• NEM_SETRANGE - Sets the allowed range. Min is in WPARAM and max in LPARAM
• NEM_GETREADONLY - Gets the readonly state of the edit field. NEW
• NEM_SETREADONLY - Sets the readonly state of the edit field. NEW

Notifications

• NEN_CHANGED - Sent to the owner window when the value changes

// Declare a CNumericEdit

CNumericEdit m_Edit;        
        
//

// Creating the control

//

CRect rcRect(10,10,142,40);
m_Edit.Create(WS_VISIBLE | WS_TABSTOP | NES_SPIN | NES_POPUP,rcRect,this,0);
m_Edit.SetValue(50);
m_Edit.SetRange(0,100);

Todo

• Make the popup trackbar size configurable
• XP support ??
• Bitmap in popup trackbar (just like Paint Shop Pro) ?

History

4/13/2004 - 1.0

• Initial version

4/20/2004 - 1.01

• Fixed bug where the edit would only accept hex digits. Also now allow negative sign "-" to be entered
• Added NES_METER style to make the small bar under the edit field optional
• Control will now reconfigure itself when changing style bits
• Fixed max value bug. The full range is now accesible with the popup
• Added NES_LIVEUPDATE style. This style allows the control to notify it's parent during value tracking. Without this style, the parent is updated only at the end of tracking
• Demo has been updated to show the new features
• Added DDX_NumericEdit() function for DDX support
• Now using the active window caption color for the bar colors
• Changed hardcoded custom messages to use windows registered messages so as not to cause any conflict with other custom messages