难道书上写错了？！

[13seele]

近日看清华出的“windows编程“，运行它的第一个程序就有错，希望各位看看是怎么回事
#include <windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
char *szWinName="Win95Main";

int WINAPI WinMain(HINSTANCE hThisInst,HINSTANCE hPrevInst,PSTR pszCmdLine,int nCmdShow)
{
HWND hwnd;
MSG uMsg;
WNDCLASS wndclass;
wndclass.style=0;
wndclass.lpfnWndProc=WndProc;
wndclass.cbClsExtra=0;
wndclass.hInstance=hThisInst;
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName=NULL;
wndclass.lpszClassName=szWinName;
RegisterClass(&wndclass);

hwnd=CreateWindow(szWinName,"Windows95 API",WS_OVERLAPPEDWINDOW|WS_HSCROLL|WS_VSCROLL,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hThisInst,NULL);

ShowWindow(hwnd,nCmdShow);
UpdateWindow(hwnd);

while(GetMessage(&uMsg,NULL,0,0)){
TranslateMessage(&uMsg);
DispatchMessage(&uMsg);
}
return uMsg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)

{
switch(message){
case WM_HSCROLL:
case WM_VSCROLL:
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(hwnd,message,wParam,lParam);
}
}

在两台机器上运行以后都毫无反应，倒是按Ctrl+Alt+Del看任务列表可以看到这个任务正在运行，我想是
showwindow有问题，但左改右改窗口都出不来，只好麻烦各位了。另外问一句，这是windows API编程么？

[wjf]

fist, be sure CreateWindow return a valid windows handle.
That window should be found by use spyxx on that process.

[gongxy]

WNDCLASS wndclass;
memset(&wndclass,0,sizeof(wndclass));
wndclass.style=0;

[Sam_Yang]

creatwindow 没有指明注册的窗口类的名字

[iamwjp]

这位兄台请了。
的确是API编程。
只是想问一下，上面的Code能编译通过吗？

[iamwjp]

我靠，调了半天发现少了一行 wndclass.cbWndExtra = 0;
气疯了。

[iamwjp]

wndclass.hbrBackground =加（HBRUSH)才能编译通过 GetStockObject(WHITE_BRUSH);