windows刷新客户区的问题
- C/C++ code
#include <windows.h>#define DIVISIONS 5LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow){ static TCHAR szAppName[] = TEXT ("Checker1") ; 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 ("Program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, TEXT ("Checker1 Mouse Hit-TestDemo"), 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 int cxBlock, cyBlock ,nHit ; static char szBuffer[59]; HDC hdc ; int x, y ; static int nx,ny; PAINTSTRUCT ps ; RECT rect ; switch (message) { case WM_SIZE : cxBlock = LOWORD (lParam) / DIVISIONS ; cyBlock = HIWORD (lParam) / DIVISIONS ; return 0 ; case WM_LBUTTONDOWN : x = LOWORD (lParam) / cxBlock ; y = HIWORD (lParam) / cyBlock ; if (nx==x&&ny==y) { nHit++; hdc=BeginPaint(hwnd,&ps); TextOut(hdc,10,10,szBuffer,wsprintf(szBuffer,"hit is :%d",nHit)); EndPaint(hwnd,&ps); InvalidateRect (hwnd, &rect, FALSE) ; } else { InvalidateRect (hwnd, &rect, FALSE) ; } return 0 ; case WM_PAINT : hdc = BeginPaint (hwnd, &ps) ; for (x = 0 ; x < DIVISIONS ; x++) for (y = 0 ; y < DIVISIONS ; y++) { Rectangle (hdc, x * cxBlock, y * cyBlock, (x + 1) * cxBlock, (y + 1) * cyBlock) ; } TextOut(hdc,10,10,szBuffer,wsprintf(szBuffer,"hit is :%d",nHit)); srand(time(0)); nx=x=rand()%5; ny=y=rand()%5; fState[x][y]=1; if ( fState [x][y] ) { MoveToEx (hdc, x * cxBlock, y * cyBlock, NULL) ; LineTo(hdc, (x+1) * cxBlock, (y+1) * cyBlock) ; MoveToEx (hdc, x * cxBlock, (y+1) * cyBlock, NULL) ; LineTo (hdc, (x+1) * cxBlock, y * cyBlock) ; } InvalidateRect (hwnd, NULL, FALSE) ; Sleep(500); fState[x][y]=0; EndPaint (hwnd,&ps); return 0 ; case WM_DESTROY : PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ;}
个人改编自原书源代码，想做成“打地鼠”的游戏，各位编译下就知道了。运行就可以发现问题。麻烦各位了，谢谢！
[解决办法]
单步调试，现在忙
晚上帮你看看
[解决办法]
- C/C++ code
#include <windows.h>#include <time.h>#define DIVISIONS 5LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow){ static TCHAR szAppName[] = TEXT ("Checker1") ; 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 ("Program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, TEXT ("Checker1 Mouse Hit-TestDemo"), 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 int cxBlock, cyBlock ,nHit ; TCHAR szBuffer[59]; HDC hdc ; int x, y ; static int nx,ny; PAINTSTRUCT ps ; RECT rect ; switch (message) { case WM_SIZE : cxBlock = LOWORD (lParam) / DIVISIONS ; cyBlock = HIWORD (lParam) / DIVISIONS ; return 0 ; case WM_LBUTTONDOWN : x = LOWORD (lParam) / cxBlock ; y = HIWORD (lParam) / cyBlock ; if (nx==x&&ny==y) { nHit++; hdc=BeginPaint(hwnd,&ps); TextOut(hdc,10,10,szBuffer,wsprintf(szBuffer,TEXT("hit is :%d"),nHit)); EndPaint(hwnd,&ps); InvalidateRect (hwnd, &rect, FALSE) ; } else { InvalidateRect (hwnd, &rect, FALSE) ; } return 0 ; case WM_PAINT : hdc = BeginPaint (hwnd, &ps) ; for (x = 0 ; x < DIVISIONS ; x++) for (y = 0 ; y < DIVISIONS ; y++) { Rectangle (hdc, x * cxBlock, y * cyBlock, (x + 1) * cxBlock, (y + 1) * cyBlock) ; } TextOut(hdc,10,10,szBuffer,wsprintf(szBuffer,TEXT("hit is :%d"),nHit)); srand(time(0)); nx=x=rand()%5; ny=y=rand()%5; fState[x][y]=1; if ( fState [x][y] ) { MoveToEx (hdc, x * cxBlock, y * cyBlock, NULL) ; LineTo(hdc, (x+1) * cxBlock, (y+1) * cyBlock) ; MoveToEx (hdc, x * cxBlock, (y+1) * cyBlock, NULL) ; LineTo (hdc, (x+1) * cxBlock, y * cyBlock) ; } InvalidateRect (hwnd, NULL, FALSE) ; Sleep(500); fState[x][y]=0; EndPaint (hwnd,&ps); return 0 ; case WM_DESTROY : PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ;}
[解决办法]
哥们，你工程没建错？win32项目（vs2010）我这有警告 但是没错误啊，运行的时候有个叉叉在动~~
还得改：
点“项目(V)”->最底下的那个“xxxxx 属性”
左边展开“配置属性”，点“常规”
把右边倒数第三个的“使用 Unicode 字符集”修改成“使用多字节字符集”，点确定
现在可以点上面的绿色三角形开始编译调试了，然后就运行起来产生一个窗口了。
注意一下，如果你把编译模式“Debug”改成“Release”，是还要设置一次字符集的，因为这两种编译模式的设置都是分开的。