#include <windows.h>
#include "resource.h"
#define DIVISIONS 10
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName [] = TEXT ("Bricks1") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("LoadBitmap Demo"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{ static BOOL fState[DIVISIONS][DIVISIONS] ;
static HBITMAP hBitmap ;
static int cxClient, cyClient, cxSource, cySource ;
BITMAP bitmap ;
static HDC hdc, hdcMem ;
HINSTANCE hInstance ;
static int x, ycxBlock,cyBlock;
PAINTSTRUCT ps ;
RECT rect,rc;
switch (message)
{
case WM_CREATE:
hInstance = ((LPCREATESTRUCT) lParam)->hInstance ; hBitmap = LoadBitmap (hInstance, MAKEINTRESOURCE (IDB_BITMAP1)) ; GetObject (hBitmap, sizeof (BITMAP), &bitmap) ; cxSource = bitmap.bmWidth ;
cySource = bitmap.bmHeight ; return 0 ;
case WM_SIZE:
cxBlock = LOWORD (lParam) / DIVISIONS ;
cyBlock = HIWORD (lParam) / DIVISIONS ;
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ; case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ; hdcMem = CreateCompatibleDC (hdc) ;
SelectObject (hdcMem, hBitmap) ;
for (x =0 ; x < DIVISIONS ; x++)
for (y =0 ; y < DIVISIONS ; y++)
{
MoveToEx(hdc,cxBlock*x,0,NULL);
LineTo(hdc,cxBlock*x,cyClient);
MoveToEx(hdc,0,cyBlock*y,NULL);
LineTo(hdc,cxClient,cyBlock*y);
if (fState [x][y])
{
StretchBlt(hdc,4,4, cxBlock,cyBlock, hdcMem,0,0,cxSource,cySource, MERGECOPY);
}
}
DeleteDC (hdcMem) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_LBUTTONDOWN :
x = LOWORD (lParam) / cxBlock ;
y = HIWORD (lParam) / cyBlock ;
if (x < DIVISIONS && y < DIVISIONS)
{
fState [x][y] ^= 1 ;
rect.left = x * cxBlock ;
rect.top = y * cyBlock ;
rect.right = (x + 1) * cxBlock ;
rect.bottom = (y + 1) * cyBlock ;
GetClientRect(hwnd,&rc);
InvalidateRect (hwnd, &rc, TRUE) ;
}
else
MessageBeep (0) ;
return 0 ;
case WM_DESTROY:
DeleteObject (hBitmap) ;
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
高手教教呀......
#include "resource.h"
#define DIVISIONS 10
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName [] = TEXT ("Bricks1") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("LoadBitmap Demo"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{ static BOOL fState[DIVISIONS][DIVISIONS] ;
static HBITMAP hBitmap ;
static int cxClient, cyClient, cxSource, cySource ;
BITMAP bitmap ;
static HDC hdc, hdcMem ;
HINSTANCE hInstance ;
static int x, ycxBlock,cyBlock;
PAINTSTRUCT ps ;
RECT rect,rc;
switch (message)
{
case WM_CREATE:
hInstance = ((LPCREATESTRUCT) lParam)->hInstance ; hBitmap = LoadBitmap (hInstance, MAKEINTRESOURCE (IDB_BITMAP1)) ; GetObject (hBitmap, sizeof (BITMAP), &bitmap) ; cxSource = bitmap.bmWidth ;
cySource = bitmap.bmHeight ; return 0 ;
case WM_SIZE:
cxBlock = LOWORD (lParam) / DIVISIONS ;
cyBlock = HIWORD (lParam) / DIVISIONS ;
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ; case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ; hdcMem = CreateCompatibleDC (hdc) ;
SelectObject (hdcMem, hBitmap) ;
for (x =0 ; x < DIVISIONS ; x++)
for (y =0 ; y < DIVISIONS ; y++)
{
MoveToEx(hdc,cxBlock*x,0,NULL);
LineTo(hdc,cxBlock*x,cyClient);
MoveToEx(hdc,0,cyBlock*y,NULL);
LineTo(hdc,cxClient,cyBlock*y);
if (fState [x][y])
{
StretchBlt(hdc,4,4, cxBlock,cyBlock, hdcMem,0,0,cxSource,cySource, MERGECOPY);
}
}
DeleteDC (hdcMem) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_LBUTTONDOWN :
x = LOWORD (lParam) / cxBlock ;
y = HIWORD (lParam) / cyBlock ;
if (x < DIVISIONS && y < DIVISIONS)
{
fState [x][y] ^= 1 ;
rect.left = x * cxBlock ;
rect.top = y * cyBlock ;
rect.right = (x + 1) * cxBlock ;
rect.bottom = (y + 1) * cyBlock ;
GetClientRect(hwnd,&rc);
InvalidateRect (hwnd, &rc, TRUE) ;
}
else
MessageBeep (0) ;
return 0 ;
case WM_DESTROY:
DeleteObject (hBitmap) ;
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
高手教教呀......
hBitmap = LoadBitmap (hInstance, MAKEINTRESOURCE (IDB_BITMAP1)) ;
这个 hBitmap 返回了 NULL ,下面的就有问题了.
不知道你那边有没有测过 hBitmap ?