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PC World Komputer 1998 January
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Pcwk0198.iso
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System
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WING
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DOGGIE.C_
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DOGGIE.C
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C/C++ Source or Header
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1995-06-20
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22KB
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578 lines
/**************************************************************************
DOGGIE.C - a sprite demo for WinG
**************************************************************************/
/**************************************************************************
(C) Copyright 1994 Microsoft Corp. All rights reserved.
You have a royalty-free right to use, modify, reproduce and
distribute the Sample Files (and/or any modified version) in
any way you find useful, provided that you agree that
Microsoft has no warranty obligations or liability for any
Sample Application Files which are modified.
**************************************************************************/
#include <windows.h>
#include "doggie.h"
#include "mmsystem.h"
#include "..\utils\utils.h"
#include <wing.h>
/*----------------------------------------------------------------------------*\
| |
| g l o b a l v a r i a b l e s |
| |
\*----------------------------------------------------------------------------*/
static char szAppName[]="Doggie: WinG Sprite Demo";
static HINSTANCE hInstApp;
static HWND hwndApp;
static HPALETTE hpalApp;
static BOOL fAppActive;
typedef struct header
{
BITMAPINFOHEADER Header;
RGBQUAD aColors[256];
} header;
header BufferHeader;
long Orientation = 1; // assume bottom-up DIBs
void far *pBuffer = 0;
HDC Buffer = 0;
char unsigned TransparentColor = 0xf3;
typedef struct pal
{
WORD Version;
WORD NumberOfEntries;
PALETTEENTRY aEntries[256];
} pal;
pal LogicalPalette =
{
0x300,
256
};
HBITMAP gbmOldMonoBitmap = 0;
PDIB pBitmap;
int BitmapX, BitmapY;
int DogX, DogY;
int dx,dy;
/*----------------------------------------------------------------------------*\
| |
| f u n c t i o n d e f i n i t i o n s |
| |
\*----------------------------------------------------------------------------*/
LONG FAR PASCAL _export AppWndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam);
LONG AppCommand (HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam);
void AppExit(void);
BOOL AppIdle(void);
/*----------------------------------------------------------------------------*\
| AppAbout( hDlg, uiMessage, wParam, lParam ) |
| |
| Description: |
| This function handles messages belonging to the "About" dialog box. |
| The only message that it looks for is WM_COMMAND, indicating the user |
| has pressed the "OK" button. When this happens, it takes down |
| the dialog box. |
| |
| Arguments: |
| hDlg window handle of about dialog window |
| uiMessage message number |
| wParam message-dependent |
| lParam message-dependent |
| |
| Returns: |
| TRUE if message has been processed, else FALSE |
| |
\*----------------------------------------------------------------------------*/
BOOL FAR PASCAL _export AppAbout(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
switch (msg)
{
case WM_COMMAND:
if (LOWORD(wParam) == IDOK)
{
EndDialog(hwnd,TRUE);
}
break;
case WM_INITDIALOG:
return TRUE;
}
return FALSE;
}
/*----------------------------------------------------------------------------*\
| AppInit( hInst, hPrev) |
| |
| Description: |
| This is called when the application is first loaded into |
| memory. It performs all initialization that doesn't need to be done |
| once per instance. |
| |
| Arguments: |
| hInstance instance handle of current instance |
| hPrev instance handle of previous instance |
| |
| Returns: |
| TRUE if successful, FALSE if not |
| |
\*----------------------------------------------------------------------------*/
BOOL AppInit(HINSTANCE hInst,HINSTANCE hPrev,int sw,LPSTR szCmdLine)
{
WNDCLASS cls;
/* Save instance handle for DialogBoxes */
hInstApp = hInst;
// Clear the System Palette so that WinG blting runs at full speed.
ClearSystemPalette();
if (!hPrev)
{
/*
* Register a class for the main application window
*/
cls.hCursor = LoadCursor(NULL,IDC_ARROW);
cls.hIcon = LoadIcon(hInst,"AppIcon");
cls.lpszMenuName = "AppMenu";
cls.lpszClassName = szAppName;
cls.hbrBackground = (HBRUSH) NULL;
cls.hInstance = hInst;
cls.style = CS_BYTEALIGNCLIENT | CS_VREDRAW | CS_HREDRAW | CS_DBLCLKS;
cls.lpfnWndProc = (WNDPROC)AppWndProc;
cls.cbWndExtra = 0;
cls.cbClsExtra = 0;
if (!RegisterClass(&cls))
return FALSE;
}
dx = 400;
dy = 400;
pBitmap = DibOpenFile("Doggie");
if (!pBitmap)
pBitmap = DibOpenFile("doggie2.bmp");
BitmapX = DibWidth(pBitmap);
BitmapY = DibHeight(pBitmap);
hwndApp = CreateWindow (szAppName, // Class name
szAppName, // Caption
WS_OVERLAPPEDWINDOW, // Style bits
CW_USEDEFAULT, 0, // Position
dx,dy, // Size
(HWND)NULL, // Parent window (no parent)
(HMENU)NULL, // use class menu
hInst, // handle to window instance
(LPSTR)NULL // no params to pass on
);
ShowWindow(hwndApp,sw);
return TRUE;
}
/*----------------------------------------------------------------------------*\
| AppExit() |
| |
| Description: |
| App is just about to exit, cleanup. |
| |
\*----------------------------------------------------------------------------*/
void AppExit()
{
if (Buffer)
{
HBITMAP hbm;
// Retrieve the current WinGBitmap, replace with the original
hbm = (HBITMAP)SelectObject(Buffer, gbmOldMonoBitmap);
// And delete the WinGBitmap and WinGDC
DeleteObject(hbm);
DeleteDC(Buffer);
}
if(hpalApp)
{
DeleteObject(hpalApp);
}
}
/*----------------------------------------------------------------------------*\
| WinMain( hInst, hPrev, lpszCmdLine, cmdShow ) |
| |
| Description: |
| The main procedure for the App. After initializing, it just goes |
| into a message-processing loop until it gets a WM_QUIT message |
| (meaning the app was closed). |
| |
| Arguments: |
| hInst instance handle of this instance of the app |
| hPrev instance handle of previous instance, NULL if first |
| szCmdLine ->null-terminated command line |
| cmdShow specifies how the window is initially displayed |
| |
| Returns: |
| The exit code as specified in the WM_QUIT message. |
| |
\*----------------------------------------------------------------------------*/
int PASCAL WinMain(HINSTANCE hInst, HINSTANCE hPrev, LPSTR szCmdLine, int sw)
{
MSG msg;
/* Call initialization procedure */
if (!AppInit(hInst,hPrev,sw,szCmdLine))
return FALSE;
/*
* Polling messages from event queue
*/
for (;;)
{
if (PeekMessage(&msg, NULL, 0, 0,PM_REMOVE))
{
if (msg.message == WM_QUIT)
break;
TranslateMessage(&msg);
DispatchMessage(&msg);
}
else
{
if (AppIdle())
WaitMessage();
}
}
AppExit();
return msg.wParam;
}
/*----------------------------------------------------------------------------*\
| AppIdle() |
| |
| Description: |
| Place to do idle time stuff. |
| |
\*----------------------------------------------------------------------------*/
BOOL AppIdle()
{
if (fAppActive)
{
//
// we are the foreground app.
//
return TRUE; // nothing to do.
}
else
{
//
// we are a background app.
//
return TRUE; // nothing to do.
}
}
/*----------------------------------------------------------------------------*\
| AppPaint(hwnd, hdc) |
| |
| Description: |
| The paint function. |
| |
| Arguments: |
| hwnd window painting into |
| hdc display context to paint to |
| |
\*----------------------------------------------------------------------------*/
AppPaint (HWND hwnd, HDC hdc)
{
WinGBitBlt(hdc,0,0,dx,dy,Buffer,0,0);
return TRUE;
}
/*----------------------------------------------------------------------------
PaintDoggie
*/
void PaintDoggie( HDC Screen, int X, int Y )
{
int DestinationX = X - BitmapX/2;
int DestinationY = Y - BitmapY/2;
int Width = BitmapX;
int Height = BitmapY;
TransparentDIBits((BITMAPINFO far *)&BufferHeader,pBuffer,X-BitmapX/2,
Y-BitmapY/2,DibPtr(pBitmap),DibInfo(pBitmap),0,0,DIB_RGB_COLORS,
TransparentColor);
WinGBitBlt(Screen,DestinationX,DestinationY,Width,Height,
Buffer,X-BitmapX/2,Y-BitmapY/2);
}
/*----------------------------------------------------------------------------*\
| AppWndProc( hwnd, uiMessage, wParam, lParam ) |
| |
| Description: |
| The window proc for the app's main (tiled) window. This processes all |
| of the parent window's messages. |
| |
\*----------------------------------------------------------------------------*/
LONG FAR PASCAL _export AppWndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
static int XOffset, YOffset;
BOOL f;
DWORD Offset;
int X;
int Y;
switch (msg)
{
case WM_CREATE:
break;
case WM_ACTIVATEAPP:
fAppActive = (BOOL)wParam;
break;
case WM_SIZE:
dx = LOWORD(lParam);
dy = HIWORD(lParam);
if(Buffer)
{
HBITMAP hbm;
// Create a new 8-bit WinGBitmap with the new size
BufferHeader.Header.biWidth = LOWORD(lParam);
BufferHeader.Header.biHeight = HIWORD(lParam) * Orientation;
hbm = WinGCreateBitmap(Buffer,
(BITMAPINFO far *)&BufferHeader, &pBuffer);
// Select it in and delete the old one
hbm = (HBITMAP)SelectObject(Buffer, hbm);
DeleteObject(hbm);
}
else
{
// Create a new WinGDC and 8-bit WinGBitmap
HBITMAP hbm;
int Counter;
HDC Screen;
RGBQUAD far *pColorTable;
// Get WinG to recommend the fastest DIB format
if(WinGRecommendDIBFormat((BITMAPINFO far *)&BufferHeader))
{
// make sure it's 8bpp and remember the orientation
BufferHeader.Header.biBitCount = 8;
BufferHeader.Header.biCompression = BI_RGB;
Orientation = BufferHeader.Header.biHeight;
}
else
{
// set it up ourselves
BufferHeader.Header.biSize = sizeof(BITMAPINFOHEADER);
BufferHeader.Header.biPlanes = 1;
BufferHeader.Header.biBitCount = 8;
BufferHeader.Header.biCompression = BI_RGB;
BufferHeader.Header.biSizeImage = 0;
BufferHeader.Header.biClrUsed = 0;
BufferHeader.Header.biClrImportant = 0;
}
BufferHeader.Header.biWidth = LOWORD(lParam);
BufferHeader.Header.biHeight = HIWORD(lParam) * Orientation;
// create an identity palette from the DIB's color table
// get the 20 system colors as PALETTEENTRIES
Screen = GetDC(0);
GetSystemPaletteEntries(Screen,0,10,LogicalPalette.aEntries);
GetSystemPaletteEntries(Screen,246,10,
LogicalPalette.aEntries + 246);
ReleaseDC(0,Screen);
// initialize the logical palette and DIB color table
for(Counter = 0;Counter < 10;Counter++)
{
// copy the system colors into the DIB header
// WinG will do this in WinGRecommendDIBFormat,
// but it may have failed above so do it here anyway
BufferHeader.aColors[Counter].rgbRed =
LogicalPalette.aEntries[Counter].peRed;
BufferHeader.aColors[Counter].rgbGreen =
LogicalPalette.aEntries[Counter].peGreen;
BufferHeader.aColors[Counter].rgbBlue =
LogicalPalette.aEntries[Counter].peBlue;
BufferHeader.aColors[Counter].rgbReserved = 0;
LogicalPalette.aEntries[Counter].peFlags = 0;
BufferHeader.aColors[Counter + 246].rgbRed =
LogicalPalette.aEntries[Counter + 246].peRed;
BufferHeader.aColors[Counter + 246].rgbGreen =
LogicalPalette.aEntries[Counter + 246].peGreen;
BufferHeader.aColors[Counter + 246].rgbBlue =
LogicalPalette.aEntries[Counter + 246].peBlue;
BufferHeader.aColors[Counter + 246].rgbReserved = 0;
LogicalPalette.aEntries[Counter + 246].peFlags = 0;
}
pColorTable = (RGBQUAD far *)
((char far *)pBitmap + pBitmap->biSize);
for(Counter = 10;Counter < 246;Counter++)
{
// copy from the original color table to the WinGBitmap's
// color table and the logical palette
BufferHeader.aColors[Counter].rgbRed =
LogicalPalette.aEntries[Counter].peRed =
pColorTable[Counter].rgbRed;
BufferHeader.aColors[Counter].rgbGreen =
LogicalPalette.aEntries[Counter].peGreen =
pColorTable[Counter].rgbGreen;
BufferHeader.aColors[Counter].rgbBlue =
LogicalPalette.aEntries[Counter].peBlue =
pColorTable[Counter].rgbBlue;
BufferHeader.aColors[Counter].rgbReserved = 0;
LogicalPalette.aEntries[Counter].peFlags = PC_NOCOLLAPSE;
}
hpalApp = CreatePalette((LOGPALETTE far *)&LogicalPalette);
// Create a WinGDC and Bitmap, then select away
Buffer = WinGCreateDC();
hbm = WinGCreateBitmap(Buffer,
(BITMAPINFO far *)&BufferHeader, &pBuffer);
// Store the old hbitmap to select back in before deleting
gbmOldMonoBitmap = (HBITMAP)SelectObject(Buffer, hbm);
}
PatBlt(Buffer, 0,0,dx,dy, BLACKNESS);
// Stick the doggie into the center of the buffer
TransparentDIBits((BITMAPINFO far *)&BufferHeader,pBuffer,
dx/2-BitmapX/2,dy/2-BitmapY/2,DibPtr(pBitmap),DibInfo(pBitmap),
DIB_RGB_COLORS,0,0,TransparentColor);
break;
case WM_MOUSEMOVE:
if(GetKeyState(VK_LBUTTON) < 0)
{
hdc = GetDC(hwnd);
Offset = GetViewportOrg(hdc);
XOffset = LOWORD(Offset);
YOffset = HIWORD(Offset);
X = LOWORD(lParam);
Y = HIWORD(lParam);
SelectPalette(hdc,hpalApp,FALSE);
RealizePalette(hdc);
PaintDoggie(hdc,X - XOffset,Y - YOffset);
ReleaseDC(hwnd,hdc);
}
break;
case WM_COMMAND:
return AppCommand(hwnd,msg,wParam,lParam);
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_CLOSE:
break;
case WM_PALETTECHANGED:
if ((HWND)wParam == hwnd)
break;
// fall through to WM_QUERYNEWPALETTE
case WM_QUERYNEWPALETTE:
hdc = GetDC(hwnd);
if (hpalApp)
SelectPalette(hdc, hpalApp, FALSE);
f = RealizePalette(hdc);
ReleaseDC(hwnd,hdc);
if (f)
InvalidateRect(hwnd,NULL,TRUE);
return f;
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
SelectPalette(hdc, hpalApp, FALSE);
RealizePalette(hdc);
AppPaint (hwnd,hdc);
EndPaint(hwnd,&ps);
return 0L;
}
return DefWindowProc(hwnd,msg,wParam,lParam);
}
/*----------------------------------------------------------------------------*\
| AppCommand(hwnd, msg, wParam, lParam ) |
| |
| Description: |
| Handles WM_COMMAND messages for the main window (hwndApp) |
| of the parent window's messages. |
| |
\*----------------------------------------------------------------------------*/
LONG AppCommand (HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
switch(wParam)
{
case MENU_ABOUT:
DialogBox(hInstApp,"AppAbout",hwnd,(DLGPROC)AppAbout);
break;
case MENU_EXIT:
PostMessage(hwnd,WM_CLOSE,0,0L);
break;
}
return 0L;
}
