Question

在画了很多圈后，我想要一个圆圈之间的手柄碰撞，但我不知道该怎么做。我希望圆圈的颜色是随机的。我使用函数RGB（），但它不起作用。请帮我！。谢谢。

我的代码

int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
HBRUSH brush;
HBRUSH hBrush;
HPEN hPen;

static int dX[10] , dY[10] ;
static int x[10], y[10], oldX[10], oldY[10];
switch (message)
{
case WM_CREATE:
    SetTimer(hWnd, 1, 3, NULL);
    Beep(750, 300);
    for (int i = 0; i < 10; i++){
        dX[i] = rand() % 15 + 0;
        dY[i] = rand() % 15 + 0;
        x[i] = rand() % 15 + 0;
        y[i] = rand() % 15 + 0;
        oldX[i] = x[i];
        oldY[i] = y[i];
    }
    break;
case WM_TIMER:
    hdc = GetDC(hWnd);
    brush = (HBRUSH)SelectObject(hdc, GetStockObject(WHITE_BRUSH));

    RECT temp[10];
    RECT rect;
    GetClientRect(hWnd, &rect);
    brush = (HBRUSH)SelectObject(hdc, GetStockObject(RGB(rand() % 255 + 0, rand() % 255 + 0, rand() % 255 + 0)));
    for (int i = 0; i <10; i++){
        temp[i].left = oldX[i];
        temp[i].top = oldY[i];
        temp[i].right = oldX[i] + 30;
        temp[i].bottom = oldY[i] + 30;
        FillRect(hdc, &temp[i], brush); 

        Ellipse(hdc, x[i], y[i], 30 + x[i], 30 + y[i]);
        oldX[i] = x[i];
        oldY[i] = y[i];

        x[i] += dX[i];
        y[i] += dY[i];


        if (x[i] + 30 > rect.right || x[i] < 0)
        {
            dX[i] = -dX[i];
        }
        if (y[i] + 30 > rect.bottom || y[i] < 0)
        {
            dY[i] = -dY[i];
        }

    }

    SelectObject(hdc, brush);

    ReleaseDC(hWnd, hdc);

    break;

我的照片在这里演示。

http://www.upsieutoc.com/images/2014/07/14/289ccd.jpg

Win32应用程序中的冲突处理

0 个答案: