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