屏幕上的大多数文字都是由gdi32.dll的以下几个函数显示的：

TextOuA,TextOutW,ExtTextOutA,ExtTextOutW。象user32.dll中的DrawTextA，

DrawTextW都是调用GDI32.DLL的这几个函数实现的。其实大家都知道实现

屏幕抓词的关键是如何截获对这几个函数的调用。我从易到难简要描述一下

实现抓词需要做的几件事：





一、　　得到鼠标的当前位置。

二、向鼠标下的窗口发重画消息，让它调用系统函数重画。

三、截获对系统函数的调用，得到发给系统函数的参数。

-Most of the text on the screen by the following function gdi32.dll displayed: TextOuA, TextOutW, ExtTextOutA, ExtTextOutW. Like user32.dll in DrawTextA, DrawTextW are calling this a number of functions GDI32.DLL achievable. In fact, we all know that screen realize grasping the key word is how to intercept this call a few functions. From easy to difficult, I briefly describe the realization of the need to grasp the words to do several things: First, get the mouse s current location. Second, to the window under the mouse fat redraw message, it calls system function redraw. Third, the system intercepted function call, to be distributed to system function parameters.