#include <windows.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
char szClassName[ ] = "WindowsApp";
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nFunsterStil)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default color as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
"Windows App", /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
544, /* The programs width */
375, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nFunsterStil);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message) /* handle the messages */
{
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
BOOL LoadBitmapFromBMPFile( LPTSTR szFileName, HBITMAP *phBitmap, HPALETTE *phPalette )
{
BITMAP bm;
*phBitmap = NULL;
*phPalette = NULL;
// Use LoadImage() to get the image loaded into a DIBSection
*phBitmap = (HBITMAP)LoadImage( NULL, szFileName, IMAGE_BITMAP, 0, 0,
LR_CREATEDIBSECTION | LR_DEFAULTSIZE | LR_LOADFROMFILE );
if( *phBitmap == NULL )
return FALSE;
// Get the color depth of the DIBSection
GetObject(*phBitmap, sizeof(BITMAP), &bm );
// If the DIBSection is 256 color or less, it has a color table
if( ( bm.bmBitsPixel * bm.bmPlanes ) <= 8 )
{
HDC hMemDC;
HBITMAP hOldBitmap;
RGBQUAD rgb[256];
LPLOGPALETTE pLogPal;
WORD i;
// Create a memory DC and select the DIBSection into it
hMemDC = CreateCompatibleDC( NULL );
hOldBitmap = (HBITMAP)SelectObject( hMemDC, *phBitmap );
// Get the DIBSection's color table
GetDIBColorTable( hMemDC, 0, 256, rgb );
// Create a palette from the color tabl
pLogPal = (LOGPALETTE *)malloc( sizeof(LOGPALETTE) + (256*sizeof(PALETTEENTRY)) );
pLogPal->palVersion = 0x300;
pLogPal->palNumEntries = 256;
for(i=0;i<256;i++)
{
pLogPal->palPalEntry[i].peRed = rgb[i].rgbRed;
pLogPal->palPalEntry[i].peGreen = rgb[i].rgbGreen;
pLogPal->palPalEntry[i].peBlue = rgb[i].rgbBlue;
pLogPal->palPalEntry[i].peFlags = 0;
}
*phPalette = CreatePalette( pLogPal );
// Clean up
free( pLogPal );
SelectObject( hMemDC, hOldBitmap );
DeleteDC( hMemDC );
}
else // It has no color table, so use a halftone palette
{
HDC hRefDC;
hRefDC = GetDC( NULL );
*phPalette = CreateHalftonePalette( hRefDC );
ReleaseDC( NULL, hRefDC );
}
return TRUE;
}
Rispondi quotando
