C++大神帮忙看看这个 表达式!case WM_SIZE :cxBlock = LOWORD (lParam) / DIVISIONS ;cyBlock = HIWORD (lParam) / DIVISIONS ;return 0 ;case WM_LBUTTONDOWN :x = GET_X_LPARAM (lParam) / cxBlock ;y = GET_Y_LPARAM (lParam) / cyBlock ;if (x < DIVISIO

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/03 08:09:07
C++大神帮忙看看这个 表达式!case WM_SIZE :cxBlock = LOWORD (lParam) / DIVISIONS ;cyBlock = HIWORD (lParam) / DIVISIONS ;return 0 ;case WM_LBUTTONDOWN :x = GET_X_LPARAM (lParam) / cxBlock ;y = GET_Y_LPARAM (lParam) / cyBlock ;if (x < DIVISIO

C++大神帮忙看看这个 表达式!case WM_SIZE :cxBlock = LOWORD (lParam) / DIVISIONS ;cyBlock = HIWORD (lParam) / DIVISIONS ;return 0 ;case WM_LBUTTONDOWN :x = GET_X_LPARAM (lParam) / cxBlock ;y = GET_Y_LPARAM (lParam) / cyBlock ;if (x < DIVISIO
C++大神帮忙看看这个 表达式!
case WM_SIZE :
cxBlock = LOWORD (lParam) / DIVISIONS ;
cyBlock = HIWORD (lParam) / DIVISIONS ;
return 0 ;
case WM_LBUTTONDOWN :
x = GET_X_LPARAM (lParam) / cxBlock ;
y = GET_Y_LPARAM (lParam) / cyBlock ;
if (x < DIVISIONS && y < DIVISIONS)
{
fState [x][y] ^= 1 ; ? 是不是这个数组里面的数值都是负数. 然后与1异或转化为正数 好让WM_PAINT消息 处理 达到 鼠标单击 画个叉的 效果》》.
/*rect.left = x * cxBlock ;
rect.top = y * cyBlock ;
rect.right = (x + 1) * cxBlock ;
rect.bottom = (y + 1) * cyBlock ;
*/
InvalidateRect (hwnd, &rect, FALSE) ;
}
else
MessageBeep (0) ;
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) ;
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) ;
}
}
EndPaint (hwnd, &ps) ;
return 0 ;

C++大神帮忙看看这个 表达式!case WM_SIZE :cxBlock = LOWORD (lParam) / DIVISIONS ;cyBlock = HIWORD (lParam) / DIVISIONS ;return 0 ;case WM_LBUTTONDOWN :x = GET_X_LPARAM (lParam) / cxBlock ;y = GET_Y_LPARAM (lParam) / cyBlock ;if (x < DIVISIO
fState [x][y]在下面做条件了,所以跟1异或就相当于最后一位取反吧,1变成0,0变成1,