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toolbar.c
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C/C++ Source or Header
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1997-10-05
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7KB
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201 lines
/******************************************************************************\
* This is a part of the Microsoft Source Code Samples.
* Copyright (C) 1993-1997 Microsoft Corporation.
* All rights reserved.
* This source code is only intended as a supplement to
* Microsoft Development Tools and/or WinHelp documentation.
* See these sources for detailed information regarding the
* Microsoft samples programs.
\******************************************************************************/
// ************************************************************************
// MODULE : ToolBar.C
// PURPOSE : A Win32 DLL containing a simple text ToolBar
// FUNCTIONS :
// DllMain() - Dll entry point (via _DllMainCRTStartup)
// TextButtonBar() - generate a text button ToolBar
// TextButtonBarProc - processes messages for the TextButtonBarWClass
// COMMENTS :
//
// ************************************************************************
#define STRICT // enable strict typing
#include <Windows.H> // required for all Windows applications
#include "ToolBar.H" // specific to this program
//-- internal data
HWND hWndToolBarOwner; // window handle of Toolbar owner
// where all WM_COMMAND messages are sent
//-- internal prototypes
LRESULT CALLBACK TextButtonBarProc( HWND, UINT, WPARAM, LPARAM );
// ************************************************************************
// FUNCTION : DllMain( HINSTANCE, DWORD, LPVOID )
// PURPOSE : DllMain is called by the C run-time library from the
// _DllMainCRTStartup entry point. The DLL entry point gets
// called (entered) on the following events: "Process Attach",
// "Thread Attach", "Thread Detach" or "Process Detach".
// COMMENTS : No initialization is needed here so this entry point simply
// returns TRUE.
// ************************************************************************
BOOL WINAPI
DllMain( HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved )
{
UNREFERENCED_PARAMETER( hInstDLL );
UNREFERENCED_PARAMETER( fdwReason );
UNREFERENCED_PARAMETER( lpvReserved );
return( TRUE );
}
// ************************************************************************
// FUNCTION : TextButtonBar( HWND, LPTEXTBUTTON, LPINT )
// PURPOSE : Generate a simple text button ToolBar
// COMMENTS : lpTextButton points to an array of TEXTBUTTON
// structures. The last structure must set the
// member lpButtonText to NULL. lpHeight contains the
// height of the ToolBar window.
// ************************************************************************
HWND
TextButtonBar( HWND hWndParent, LPTEXTBUTTON lpTextButton, LPINT lpHeight )
{
#define BUTTON_BORDER 4
#define BUTTONBAR_BORDER 4
static HWND hWndTextButtonBar;
HDC hDC;
WNDCLASS WndClass;
LONG ButtonWidth;
LONG ButtonHeight;
INT xPosButton;
INT ButtonSpacing;
INT ButtonSpace;
LPTSTR lpButtonString;
LPTEXTBUTTON lpTempTextButton;
TEXTMETRIC tm;
SIZE ButtonTextSize;
RECT rect;
//-- store owner of Toolbar
hWndToolBarOwner = hWndParent;
//-- register the TestButtonBar window class
WndClass.style = (UINT) NULL;
WndClass.lpfnWndProc = (WNDPROC) TextButtonBarProc;
WndClass.cbClsExtra = 0;
WndClass.cbWndExtra = 0;
WndClass.hInstance = NULL;
WndClass.hIcon = NULL;
WndClass.hCursor = NULL;
WndClass.hbrBackground = (HBRUSH) GetStockObject(LTGRAY_BRUSH);
WndClass.lpszMenuName = NULL;
WndClass.lpszClassName = TEXT( "TextButtonBarWClass" );
if( !RegisterClass( &WndClass ) )
return( FALSE );
hDC = GetDC( hWndParent );
GetTextMetrics( hDC, &tm );
ButtonHeight = 2 * BUTTON_BORDER + tm.tmHeight;
*lpHeight = 2 * BUTTONBAR_BORDER + ButtonHeight;
GetWindowRect( GetDesktopWindow(), &rect );
hWndTextButtonBar = CreateWindow(
TEXT( "TextButtonBarWClass" ), TEXT( "Toolbar" ),
WS_CHILD | WS_CLIPSIBLINGS,
0, 0, rect.right - rect.left, *lpHeight,
hWndToolBarOwner,
(HMENU) NULL, (HANDLE) NULL, NULL );
SetWindowPos( hWndTextButtonBar, (HWND) 1, 0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE );
//-- button spacing information
ButtonSpacing = BUTTON_BORDER / 2;
ButtonSpace = BUTTON_BORDER * 4;
xPosButton = BUTTON_BORDER * 2;
//-- Create all the button windows
for( lpTempTextButton = lpTextButton;
!( (lpTempTextButton->lpButtonText) == '\0'
&& (lpTempTextButton->idButton) == (UINT) NULL);
lpTempTextButton++ ) {
//-- if TB_SPACE then adjust new xPos and continue
if( lpTempTextButton->idButton == TB_SPACE ) {
xPosButton += ButtonSpace;
continue;
}
lpButtonString = lpTempTextButton->lpButtonText;
GetTextExtentPoint( hDC, lpButtonString, lstrlen(lpButtonString), &ButtonTextSize );
ButtonWidth = (4 * BUTTON_BORDER) + (LONG) ButtonTextSize.cx;
(lpTempTextButton->hWndButton) = CreateWindow(
TEXT( "BUTTON" ), lpButtonString,
WS_VISIBLE | BS_PUSHBUTTON | WS_CHILD,
xPosButton, BUTTONBAR_BORDER, ButtonWidth, ButtonHeight,
hWndTextButtonBar,
(HMENU) lpTempTextButton->idButton,
(HANDLE) NULL, NULL );
xPosButton += ButtonWidth + ButtonSpacing;
}
ReleaseDC( hWndParent, hDC );
return( hWndTextButtonBar );
}
// ************************************************************************
// FUNCTION : TextButtonBarProc( HWND, UINT, WPARAM, LPARAM )
// PURPOSE : Processes messages for the TextButtonBarWClass
// MESSAGES :
// WM_COMMAND - forwarded to the owner window
// WM_PAINT - draws a 3D background
// COMMENTS :
// ************************************************************************
LRESULT CALLBACK
TextButtonBarProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
static HDC hDC;
static RECT rect;
static PAINTSTRUCT ps;
switch( uMsg ) {
case WM_COMMAND:
SendMessage( hWndToolBarOwner, uMsg, wParam, lParam );
return( FALSE );
case WM_PAINT:
hDC = BeginPaint( hWnd, &ps );
GetClientRect( hWnd, &rect );
SelectObject( hDC, GetStockObject(WHITE_PEN) );
MoveToEx( hDC, rect.left, rect.top, NULL );
LineTo( hDC, rect.right+1, rect.top );
#define DKGRAY_PEN RGB(128, 128, 128)
SelectObject( hDC, (HANDLE) CreatePen( PS_SOLID, 1, DKGRAY_PEN ) );
MoveToEx( hDC, rect.left, rect.bottom-2, NULL );
LineTo( hDC, rect.right+1, rect.bottom-2 );
SelectObject( hDC, (HANDLE) CreatePen( PS_SOLID, 1, BLACK_PEN ) );
MoveToEx( hDC, rect.left, rect.bottom-1, NULL );
LineTo( hDC, rect.right+1, rect.bottom-1 );
DeleteObject( SelectObject( hDC, GetStockObject(BLACK_PEN) ) );
EndPaint( hWnd, &ps );
return( FALSE );
default:
return( DefWindowProc(hWnd, uMsg, wParam, lParam) );
}
}