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- Paul King
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- ____________________________________________________________
- Message Bar
-
-
- Application Programming Interface
- Version 1.0
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- December 30, 1992
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-
- CONTENTS
-
- CONTENTS i
- Preface 1
- Intended Audience 1
- Message Bar API 1
- InitMB 2
- Function Prototype 2
- Purpose 2
- Variables 2
- Returns 2
- Comments 2
- KillMB 3
- Function Prototype 3
- Purpose 3
- Variables 3
- Comments 3
- ResizeMB 4
- Function Prototype 4
- Purpose 4
- Variables 4
- Comments 4
- ColorMB 5
- Function Prototype 5
- Purpose 5
- Variables 5
- Returns 5
- Comments 5
- MBText 6
- Function Prototype 6
- Purpose 6
- Variables 6
- Comments 6
- MBShow 7
- Function Prototype 7
- Purpose 7
- Variables 7
- Comments 7
-
- Preface
- This document provides a detailed description of the
- application programming interface (API) used with the
- Message Bar DLL (MESSAGEB.DLL). All software interfaces are
- available from any application that can call routines
- located in DLL's. All of this software was written in C.
-
- Message Bar is a control that can be used by an application
- to display messages in the lower portion of the
- application's main window. This API explains all of the
- current functionality supported.
-
-
- Intended Audience
- This document is for programmers. The reader should have a
- thorough understanding of MS-DOS, Microsoft Windows, and C.
-
-
- Message Bar API
- The following function calls are exported in the
- MESSAGEB.DLL:
-
- InitMB
- KillMB
- ResizeMB
- ColorMB
- MBText
- MBShow
-
- Each of these functions is described below.
-
-
- InitMB
-
- Function Prototype
- InitMB(HWND, HINSTANCE, COLORREF, COLORREF, BOOL)
-
- Purpose
- Init the message bar
-
- Variables
- HWND
- Handle of the Window that will contain the Message Bar.
-
- HINSTANCE
- Handle of the Instance of the Owning Application.
-
- COLORREF
- Message Bar Background Color
-
- COLORREF
- Message Bar Text Color
-
- BOOL
- Initial display state
-
- Returns
- BOOL
- TRUE on success, FALSE on failure.
-
- Comments
- InitMB should only be called ONCE per application. The
- current design of MESSAGEB.DLL only allows one message bar
- per application. The calling program may specify the text
- and background colors to be displayed on the status bar as
- well as the initial display state of the status bar. This
- call should be placed after the CreateWindow call for the
- main application window.
-
-
- KillMB
- Function Prototype
- KillMB(void)
-
- Purpose
- Remove the message bar
-
- Variables
- NONE
-
- Comments
- KillMB must be called ONCE for each application that issued
- and received a TRUE response from a InitMB call. Not
- calling KillMB will eventually cause Windows to crash do to
- lack of resources. This call should be placed in the
- WM_DESTROY message of the application callback procedure.
-
-
- ResizeMB
- Function Prototype
- ResizeMB(void)
-
- Purpose
- Re-sizes the message bar
-
- Variables
- NONE
-
- Comments
- ResizeMB must be placed in the WM_SIZE message of the
- application callback procedure. If this function call is
- not placed here, the message bar will not change size as the
- owning window changes size.
-
-
- ColorMB
- Function Prototype
- ColorMB(WPARAM, LPARAM)
-
- Purpose
- Paint the Message Bar
-
- Variables
- WPARAM
- wParam from the WM_CTLCOLOR Message.
-
- LPARAM
- lParam from the WM_CTLCOLOR Message.
-
- Returns
- LRESULT
- To be returned to Windows.
-
- Comments
- This call should be placed in the WM_CTLCOLOR message of the
- application callback procedure. The result should be
- returned to Windows via the return statement. An example of
- the use of this call is in SAMPLE.C. If this call is not
- used, the control will never be painted.
-
-
- MBText
- Function Prototype
- MBText(LPSTR)
-
- Purpose
- Place text on the Message Bar
-
- Variables
- LPSTR
- Long pointer to a NULL terminated string. There is no
- guarantee that all of the contents of the string will be
- displayed. If the string is longer than the display, the
- string will be clipped. All strings are left-justified
- within the control.
-
- Comments
- This function places text in the Message Bar. To remove the
- text, call MBText ("").
-
-
- MBShow
- Function Prototype
- MBShow(BOOL)
-
- Purpose
- Turn the Message Bar on of off
-
- Variables
- BOOL
- TRUE turns the Message Bar on. FALSE hides the Message Bar.
- Comments
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