The MONITORINFO structure contains information about a display monitor.

The GetMonitorInfo function stores information in a MONITORINFO structure or a MONITORINFOEX structure.

The MONITORINFO structure is a subset of the MONITORINFOEX structure. The MONITORINFOEX structure adds a string member to contain a name for the display monitor.

C# Definition:

    [StructLayout(LayoutKind.Sequential)]
    internal struct MonitorInfo
    {
    /// <summary>
    /// The size, in bytes, of the structure. Set this member to sizeof(MONITORINFO) (40) before calling the GetMonitorInfo function.
    /// Doing so lets the function determine the type of structure you are passing to it.
    /// </summary>
    public int Size;

    /// <summary>
    /// A RECT structure that specifies the display monitor rectangle, expressed in virtual-screen coordinates.
    /// Note that if the monitor is not the primary display monitor, some of the rectangle's coordinates may be negative values.
    /// </summary>
    public RectStruct Monitor;

    /// <summary>
    /// A RECT structure that specifies the work area rectangle of the display monitor that can be used by applications,
    /// expressed in virtual-screen coordinates. Windows uses this rectangle to maximize an application on the monitor.
    /// The rest of the area in rcMonitor contains system windows such as the task bar and side bars.
    /// Note that if the monitor is not the primary display monitor, some of the rectangle's coordinates may be negative values.
    /// </summary>
    public RectStruct WorkArea;

    /// <summary>
    /// The attributes of the display monitor.
    ///
    /// This member can be the following value:
    ///   1 : MONITORINFOF_PRIMARY
    /// </summary>
    public uint Flags;

    public void Init()
    {
        this.Size = 40;
    }
    }

    /// <summary>
    /// The RECT structure defines the coordinates of the upper-left and lower-right corners of a rectangle.
    /// </summary>
    /// <see cref="http://msdn.microsoft.com/en-us/library/dd162897%28VS.85%29.aspx"/>
    /// <remarks>
    /// By convention, the right and bottom edges of the rectangle are normally considered exclusive.
    /// In other words, the pixel whose coordinates are ( right, bottom ) lies immediately outside of the the rectangle.
    /// For example, when RECT is passed to the FillRect function, the rectangle is filled up to, but not including,
    /// the right column and bottom row of pixels. This structure is identical to the RECTL structure.
    /// </remarks>
    [StructLayout(LayoutKind.Sequential)]
    public struct RectStruct
    {
    /// <summary>
    /// The x-coordinate of the upper-left corner of the rectangle.
    /// </summary>
    public int Left;

    /// <summary>
    /// The y-coordinate of the upper-left corner of the rectangle.
    /// </summary>
    public int Top;

    /// <summary>
    /// The x-coordinate of the lower-right corner of the rectangle.
    /// </summary>
    public int Right;

    /// <summary>
    /// The y-coordinate of the lower-right corner of the rectangle.
    /// </summary>
    public int Bottom;      
    }

Alternative Managed API:

Do you know one? Please contribute it!

Notes:

If the monitor is the primary monitor the flag will be set too MONITORINFOF_PRIMARY. The declaration for MONITORINFOF_PRIMARY is

const uint MONITORINFOF_PRIMARY = 1;

Tips & Tricks:

Please add some!

Sample Code:

Please add some!

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).