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Windows 95 API Bible
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Windows 95 API Bible 3 Disc Set.iso
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Win32 API Bible Book 1 of 3.iso
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chapter9
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crtcursr.c
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C/C++ Source or Header
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1996-01-28
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8KB
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252 lines
#include <windows.h>
#include "CrtCursr.h"
#if defined (WIN32)
#define IS_WIN32 TRUE
#else
#define IS_WIN32 FALSE
#endif
#define IS_NT IS_WIN32 && (BOOL)(GetVersion() < 0x80000000)
#define IS_WIN32S IS_WIN32 && (BOOL)(!(IS_NT) && (LOBYTE(LOWORD(GetVersion()))<4))
#define IS_WIN95 (BOOL)(!(IS_NT) && !(IS_WIN32S)) && IS_WIN32
HINSTANCE hInst; // current instance
LPCTSTR lpszAppName = "MyApp";
LPCTSTR lpszTitle = "My Application";
BOOL RegisterWin95( CONST WNDCLASS* lpwc );
int APIENTRY WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPTSTR lpCmdLine, int nCmdShow)
{
MSG msg;
HWND hWnd;
WNDCLASS wc;
// Register the main application window class.
//............................................
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC)WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon( hInstance, lpszAppName );
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = lpszAppName;
wc.lpszClassName = lpszAppName;
if ( IS_WIN95 )
{
if ( !RegisterWin95( &wc ) )
return( FALSE );
}
else if ( !RegisterClass( &wc ) )
return( FALSE );
hInst = hInstance;
// Create the main application window.
//....................................
hWnd = CreateWindow( lpszAppName,
lpszTitle,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0,
CW_USEDEFAULT, 0,
NULL,
NULL,
hInstance,
NULL
);
if ( !hWnd )
return( FALSE );
ShowWindow( hWnd, nCmdShow );
UpdateWindow( hWnd );
while( GetMessage( &msg, NULL, 0, 0) )
{
TranslateMessage( &msg );
DispatchMessage( &msg );
}
return( msg.wParam );
}
BOOL RegisterWin95( CONST WNDCLASS* lpwc )
{
WNDCLASSEX wcex;
wcex.style = lpwc->style;
wcex.lpfnWndProc = lpwc->lpfnWndProc;
wcex.cbClsExtra = lpwc->cbClsExtra;
wcex.cbWndExtra = lpwc->cbWndExtra;
wcex.hInstance = lpwc->hInstance;
wcex.hIcon = lpwc->hIcon;
wcex.hCursor = lpwc->hCursor;
wcex.hbrBackground = lpwc->hbrBackground;
wcex.lpszMenuName = lpwc->lpszMenuName;
wcex.lpszClassName = lpwc->lpszClassName;
// Added elements for Windows 95.
//...............................
wcex.cbSize = sizeof(WNDCLASSEX);
wcex.hIconSm = LoadImage(wcex.hInstance, lpwc->lpszClassName,
IMAGE_ICON, 16, 16,
LR_DEFAULTCOLOR );
return RegisterClassEx( &wcex );
}
LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
{
static HCURSOR hCursor = NULL;
static int nCursX, nCursY, nByteArea;
static HBITMAP hBM;
static HDC hDCBitmap;
static HANDLE hmemAND, hmemXOR;
switch( uMsg )
{
case WM_CREATE:
{
HDC hDC;
LPTSTR lpAND, lpXOR;
// Get the cursor size.
//.....................
nCursX = GetSystemMetrics( SM_CXCURSOR );
nCursY = GetSystemMetrics( SM_CYCURSOR );
// Create a memory DC and select a bitmap into it.
//................................................
hBM = CreateBitmap( nCursX, nCursY, 1, 1, NULL );
hDC = GetDC( hWnd );
hDCBitmap = CreateCompatibleDC( hDC );
SelectObject( hDCBitmap, hBM );
ReleaseDC( hWnd, hDC );
// Allocate memory for cursor masks.
//..................................
nByteArea = (nCursX/8) * nCursY;
hmemAND = GlobalAlloc( GMEM_MOVEABLE, (DWORD)nByteArea );
hmemXOR = GlobalAlloc( GMEM_MOVEABLE, (DWORD)nByteArea );
// Lock memory for cursor masks.
//..............................
lpAND = GlobalLock( hmemAND );
lpXOR = GlobalLock( hmemXOR );
// Create a gray rectangle cursor.
//................................
SelectObject( hDCBitmap, GetStockObject( LTGRAY_BRUSH ) );
PatBlt( hDCBitmap, 0, 0, nCursX, nCursY, PATCOPY );
GetBitmapBits( hBM, (DWORD)nByteArea, lpAND );
// Set XOR memory to all 0's.
//.......................
memset( lpXOR, 0, nByteArea );
hCursor = CreateCursor( hInst, 0, 0, nCursX,
nCursY, lpAND, lpXOR );
GlobalUnlock( hmemAND );
GlobalUnlock( hmemXOR );
}
break;
case WM_SETCURSOR :
if ( hCursor )
SetCursor( hCursor );
break;
case WM_COMMAND :
switch( LOWORD( wParam ) )
{
case IDM_TEST :
{
LPTSTR lpAND = GlobalLock( hmemAND );
LPTSTR lpXOR = GlobalLock( hmemXOR );
// Clear current cursor and delete it.
//....................................
SetCursor( NULL );
DestroyCursor( hCursor );
// Add an X to the cursor bitmap.
//...............................
SelectObject( hDCBitmap,
GetStockObject( BLACK_PEN ) );
MoveToEx( hDCBitmap, 0, 0, NULL );
LineTo( hDCBitmap, nCursX, nCursY );
MoveToEx( hDCBitmap, 0, nCursY, NULL );
LineTo( hDCBitmap, nCursX, 0 );
GetBitmapBits( hBM, (DWORD)nByteArea, lpAND );
hCursor = CreateCursor( hInst, 0, 0, nCursX,
nCursY, lpAND, lpXOR );
SetCursor( hCursor );
GlobalUnlock( hmemAND );
GlobalUnlock( hmemXOR );
}
break;
case IDM_ABOUT :
DialogBox( hInst, "AboutBox", hWnd, (DLGPROC)About );
break;
case IDM_EXIT :
DestroyWindow( hWnd );
break;
}
break;
case WM_DESTROY :
DestroyCursor( hCursor );
DeleteObject( hBM );
DeleteDC( hDCBitmap );
GlobalFree( hmemAND );
GlobalFree( hmemXOR );
PostQuitMessage(0);
break;
default :
return( DefWindowProc( hWnd, uMsg, wParam, lParam ) );
}
return( 0L );
}
LRESULT CALLBACK About( HWND hDlg,
UINT message,
WPARAM wParam,
LPARAM lParam)
{
switch (message)
{
case WM_INITDIALOG:
return (TRUE);
case WM_COMMAND:
if ( LOWORD(wParam) == IDOK
|| LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, TRUE);
return (TRUE);
}
break;
}
return (FALSE);
}