MonitorFromWindow.md

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Function name : MonitorFromWindow

Group: Multiple Display Monitors - Library: user32

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Retrieves a handle to the display monitor that has the largest area of intersection with the bounding rectangle of a specified window.

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Code examples:

How to change display settings: screen resolution, screen refresh rate
How to detect if additional monitor is connected and active
How to adjust monitor brightness (Vista, monitor with DDC support)

Declaration:

HMONITOR MonitorFromWindow(
  HWND hwnd,       // handle to a window
  DWORD dwFlags    // determine return value
);  

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FoxPro declaration:

DECLARE INTEGER MonitorFromWindow IN user32;
	INTEGER hWindow,;
	INTEGER dwFlags
  

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Parameters:

hwnd [in] Handle to the window of interest.

dwFlags [in] Determines the function"s return value if the window does not intersect any display monitor.

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Return value:

If the window intersects one or more display monitor rectangles, the return value is an HMONITOR handle to the display monitor that has the largest area of intersection with the window.

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Comments:

It might be possible that handles to multiple monitors are not random and start with 0x10001 value.

See also GetMonitorInfo, EnumDisplayDevices functions.

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