PM_DataSourceHistoryLog

Note: This page includes content based on the F1 documentation for Centura development. It may be partially converted to support APF development, but should be regarded to be of uncertain actuality. It is provided as is. Eventually, it should be replaced by documentation available from within Visual Studio.

Const.PM_HistoryLog

Applications and the framework send the Const.PM_DataSourceHistoryLog message to a data source to invoke the History Log window.

Parameters

Name Description
nWhat = wParam Standard method parameter. Possible values are Const.METHOD_Inquire, Const.METHOD_Execute, Const.METHOD_GetType
lParam Unused

Returns

When nWhat = Const.METHOD_Inquire, the return value is TRUE.

When nWhat = Const.METHOD_Execute, the return value is TRUE if the History Log window was successfully created, FALSE otherwise.

Comments

When the framework receives the Const.PM_DataSourceHistoryLog message, the DataTransfer object is initialized by calling DataSourcePrepareKeyTransfer and then the History Log window is created.