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CeGetWindowLong (RAPI)

Windows Mobile 6.5
A version of this page is also available for
4/8/2010

This function retrieves information about the specified window on a remote Windows Embedded CE–based device. CeGetWindowLong also retrieves the 32-bit (long) value at the specified offset into the extra window memory of a window.


LONG CeGetWindowLong(
  HWND hWnd, 
  Int nIndex 
);

hWnd

Handle to the window and, indirectly, the class to which the window belongs.

nIndex

Specifies the zero-based offset to the value to be retrieved. Valid values are in the range zero through the number of bytes of extra window memory, minus four; for example, if you specified 12 or more bytes of extra memory, a value of 8 would be an index to the third 32-bit integer. To retrieve any other value, specify one of the following values.

Values Description

GWL_EXSTYLE

Retrieves the extended window styles.

GWL_STYLE

Retrieves the window styles.

GWL_WNDPROC

Retrieves the address of the window procedure, or a handle representing the address of the window procedure. You must use the CallWindowProc function to call the window procedure.

GWL_ID

Not supported.

GWL_USERDATA

Not supported.

The following values are also available when the hWnd parameter identifies a dialog box.

Values Description

DWL_MSGRESULT

Retrieves the return value of a message processed in the dialog box procedure.

DWL_USER

Retrieves extra information private to the application, such as handles or pointers.

The requested 32-bit value indicates success. Zero indicates failure. To get extended error information, call CeGetLastError and CeRapiGetError.

The nIndex parameter must be a multiple of 4 bytes.

Unaligned access is not supported.

Headerrapi.h
Libraryrapi.lib
Windows Embedded CEWindows CE 3.0 and later
Windows MobilePocket PC 2000 and later, Smartphone 2002 and later

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