在C中使用win32 FillRect()函数的问题

时间:2015-05-22 14:17:15

标签: c winapi

我正在尝试绘制一个4x4网格的100x100矩形,其间有50px,用于2048游戏。我已经按照教程并尝试在窗口创建时调用drawCases()函数。如果我注释掉以下行,则会创建窗口并且一切正常(除了不绘制矩形):

FillRect(hdc,&rectangles[i][j],(HBRUSH)GetStockObject(LTGRAY_BRUSH));

否则程序崩溃。 这是整个功能:

void drawCases(HWND hwnd){
    HDC hdc = GetDC(hwnd); 

    // Error Check
    if(!hdc)
        return;

    RECT clientRect;
    RECT rectangles[4][4];
    GetClientRect(hwnd,&clientRect); // Get the window's client area RECT
    FillRect(hdc,&clientRect,(HBRUSH)GetStockObject(BLACK_BRUSH));
    int leftStart = (clientRect.right)/2 - 200;
    int topStart = (clientRect.bottom)/2 - 200;
    for (int i = 0; i < 4; i++){
        for (int j = 0; j < 4; i++){
            int k = j * 150;
            int n = i * 150;
            rectangles[i][j].left = k + leftStart;
            rectangles[i][j].right = k + leftStart + 100;
            rectangles[i][j].top = topStart + n;
            rectangles[i][j].bottom = topStart + n + 100;
            FillRect(hdc,&rectangles[i][j],(HBRUSH)GetStockObject(LTGRAY_BRUSH));
        }
    }
    ReleaseDC(hwnd,hdc);
}

感谢您的帮助!

1 个答案:

答案 0 :(得分:5)

这可能是错误:

 for (int j = 0; j < 4; i++){

i++替换为j++