yebanghua的专栏

终于把《windows 程序设计》看了三百多页（三分之一），在看《windows 程序设计》第九章时， HEAD程序代码中有个疑问，具体问题如下：代码为：  szBuffer [lstrlen (szBuffer) - 1] = '/0' ;   // If setting the directory doesn't work, maybe it's   // a drive change, so try t

<br />      Windows requires that you add 1 when you use these identifiers and are specifying them in the hbrBackground field of the WNDCLASS structure, but doing so has no profound purpose other than to prevent the value from being NULL. <br />--摘

<br />这是个windows编程问题。 <br />第一种情况显示出来的字很正常。 <br />case WM_PAINT: <br />           gdc = BeginPaint (hwnd, &ps); <br />           TextOut (gdc, 0, 0, s, strlen (s)); <br />           EndPaint (hwnd, &ps); <br />break; <br />第二种情况显示的字不停闪烁。 <

1.MM_ISOTROPIC是保证了视口与窗口之间x,y轴同比例.例如:xViewExt是视口水平范围,yViewExt是视口垂直范围,xWinExt是窗口水平范围,yWinExt是窗口垂直范围,那么在MM_ISOTROPIC模式到:xWinExt/xViewExt与yWinExt/yViewExt比值总是一样的,2.当调用了SetWindowExt(),SetViewportExt()方法时,逻