Windows_Message - DfBaseWindow

Sends a message to the Windows message queue

Parameters

Parameter	Type	Description
iWindowsMessage	integer	Specifies the message to be sent
iParam1	Longptr	Specifies additional message-specific information
iParam2	Longptr	Specifies additional message-specific information

Syntax

Procedure Windows_Message integer iWindowsMessage Longptr iParam1 Longptr iParam2

Call Example

Send Windows_Message iWindowsMessage iParam1 iParam2

Description

Use of this method requires Windows API knowledge about the message being sent and the control that will process the message.

Sample

This sample shows how to use WindowsMessage to retrieve the progress bar position DataFlex cProgressBar object.

Function Position Returns Integer
    If (Window_Handle(self)) Begin
        Function_Return (WindowsMessage(PBM_GETPOS, 0, 0))
    End
    Else ;
        Function_Return 0
End_Function

Sample

This sample shows how to use WindowsMessage to retrieve a handle to the next sibling of a passed node in a DataFlex TreeView object.

Function NextSibling Handle hItem returns Handle
    Move (WindowsMessage(TVM_GETNEXTITEM, TVGN_NEXT, hItem)) To hItem

    Function_Return hItem

End_Function