Spin Control
- Spin Control Game
- Spin Control Definition
- Spin Control Politics
- Win32 Spin Control
- Spin Control Politics
This section contains information about the programming elements used with up-down controls.
Overviews
| Topic | Contents |
|---|---|
| Up-Down Controls | An up-down control is a pair of arrow buttons that the user can click to increment or decrement a value, such as a scroll position or a number displayed in a companion control (called a buddy window). |
Functions
| Topic | Contents |
|---|---|
| CreateUpDownControl | Creates an up-down control. Note: This function is obsolete. It is a 16 bit function and cannot handle 32 bit values for range and position. |
Messages
| Topic | Contents |
|---|---|
| UDM_GETACCEL | Retrieves acceleration information for an up-down control. |
| UDM_GETBASE | Retrieves the current radix base (that is, either base 10 or 16) for an up-down control. |
| UDM_GETBUDDY | Retrieves the handle to the current buddy window. |
| UDM_GETPOS | Retrieves the current position of an up-down control with 16-bit precision. |
| UDM_GETPOS32 | Returns the 32-bit position of an up-down control. |
| UDM_GETRANGE | Retrieves the minimum and maximum positions (range) for an up-down control. |
| UDM_GETRANGE32 | Retrieves the 32-bit range of an up-down control. |
| UDM_GETUNICODEFORMAT | Retrieves the Unicode character format flag for the control. |
| UDM_SETACCEL | Sets the acceleration for an up-down control. |
| UDM_SETBASE | Sets the radix base for an up-down control. The base value determines whether the buddy window displays numbers in decimal or hexadecimal digits. Hexadecimal numbers are always unsigned, and decimal numbers are signed. |
| UDM_SETBUDDY | Sets the buddy window for an up-down control. |
| UDM_SETPOS | Sets the current position for an up-down control with 16-bit precision. |
| UDM_SETPOS32 | Sets the position of an up-down control with 32-bit precision. |
| UDM_SETRANGE | Sets the minimum and maximum positions (range) for an up-down control. |
| UDM_SETRANGE32 | Sets the 32-bit range of an up-down control. |
| UDM_SETUNICODEFORMAT | Sets the Unicode character format flag for the control. This message allows you to change the character set used by the control at run time rather than having to re-create the control. |
Notifications
- A spin control is a Windows control equipped with two opposite arrows. The user clicks one of the arrows at one time to increase or decrease the current value of the control. The value held by the control is also called its position. The values of a spin control range from a minimum to a maximum.
- Spin, the scooter company owned by Ford, is testing a new scooter that can be controlled by a remote operator. The scooters, Segway’s T60 model, look different than Spin’s regular fleet with the.
| Topic | Contents |
|---|---|
| NM_RELEASEDCAPTURE (up-down) | Notifies an up-down control's parent window that the control is releasing mouse capture. This notification is sent in the form of a WM_NOTIFY message. |
| UDN_DELTAPOS | Sent by the operating system to the parent window of an up-down control when the position of the control is about to change. This happens when the user requests a change in the value by pressing the control's up or down arrow. The UDN_DELTAPOS message is sent in the form of a WM_NOTIFY message. |
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Structures
| Topic | Contents |
|---|---|
| NMUPDOWN | Contains information specific to up-down control notification messages. It is identical to and replaces the NM_UPDOWN structure. |
| UDACCEL | Contains acceleration information for an up-down control. |
Spin Control Game
Constants
Spin Control Definition
| Topic | Contents |
|---|---|
| Up-Down Control Styles | This section lists the styles used when creating up-down controls. |
- MFC Tutorial
- MFC Useful Resources
- Selected Reading
A Spin Button Control (also known as an up-down control) is a pair of arrow buttons that the user can click to increment or decrement a value, such as a scroll position or a number displayed in a companion control. it is represented by CSpinButtonCtrl class.
Spin Control Politics
Here is the list of methods in CSpinButtonCtrl class −
| Sr.No. | Name & Description |
|---|---|
| 1 | Create Creates a spin button control and attaches it to a CSpinButtonCtrl object. |
| 2 | CreateEx Creates a spin button control with the specified Windows extended styles and attaches it to a CSpinButtonCtrl object. |
| 3 | GetAccel Retrieves acceleration information for a spin button control. |
| 4 | GetBase Retrieves the current base for a spin button control. |
| 5 | GetBuddy Retrieves a pointer to the current buddy window. |
| 6 | GetPos Retrieves the current position of a spin button control. |
| 7 | GetRange Retrieves the upper and lower limits (range) for a spin button control. |
| 8 | SetAccel Sets the acceleration for a spin button control. |
| 9 | SetBase Sets the base for a spin button control. |
| 10 | SetBuddy Sets the buddy window for a spin button control. |
| 11 | SetPos Sets the current position for the control. |
| 12 | SetRange Sets the upper and lower limits (range) for a spin button control. |
Here is the list of messages mapping for Spin Button control.
| Message | Map entry | Description |
|---|---|---|
| BN_CLICKED | ON_BN_CLICKED( <id>, <memberFxn> ) | The framework calls this member function when is button clicked. |
| BN_DISABLE | ON_BN_DISABLE( <id>, <memberFxn> ) | The framework calls this member function when button is disabled. |
| BN_DOUBLECLICKED | ON_BN_DOUBLECLICKED( <id>, <memberFxn> ) | The framework calls this member function when button is double clicked. |
| BN_PAINT | ON_BN_PAINT( <id>, <memberFxn> ) | The framework calls this member function when an application makes a request to repaint a button. |
Win32 Spin Control
Let us look into a simple example of Spin button by creating a new MFC dialog based application.
Step 1 − Add one Spin Control and one Edit control from the Toolbox.
Spin Control Politics
Step 2 − Go to the Properties of Spin Control and set the values of Auto Buddy and Set Buddy Integer to True.