API -> CallWindowProc [ Library : user32.dll, Category : Window Proc ] [C#, VB, VB.net]

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CallWindowProc

Library : user32.dll Category : Window Proc

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API Description :

The CallWindowProc function passes message information to the specified window procedure.

VB Declaration :

Show Multiline Public Private

Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long

Parameters :

· lpPrevWndFunc
Pointer to the previous window procedure.
If this value is obtained by calling the GetWindowLong function with the nIndex parameter set to GWL_WNDPROC or DWL_DLGPROC, it is actually either the address of a window or dialog box procedure,

Return :

The return value specifies the result of the message processing and depends on the message sent.

OS Requirement :

Requires Windows NT 3.1 or later
Requires Windows 95 or later

Dotnet Replacement :

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