用win32 Application创建一个窗体，想在窗口中显示出一个按钮，请各位帮忙找一下我的错误
为什么我用这个方法编写窗口，然后想单击鼠标左键在窗口中显示出一个按钮，怎么不行呢，请高手指点下#include <afxwin.h>
#include<windows.h>
LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);
CButton button;
HWND hwnd;
int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow
)
{
WNDCLASS wndcls;
wndcls.cbClsExtra = 0;
wndcls.cbWndExtra = 0;
wndcls.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wndcls.hIcon = LoadIcon (NULL,IDI_INFORMATION);
wndcls.hCursor = LoadCursor (NULL,IDC_CROSS);
wndcls.hInstance = hInstance;
wndcls.lpfnWndProc = WinSunProc;
wndcls.lpszClassName = "welcome";
wndcls.style = CS_HREDRAW | CS_VREDRAW;
wndcls.lpszMenuName = NULL;
RegisterClass(&wndcls); //注册窗口类
HWND hwnd;
hwnd = CreateWindow ("welcome","My first dialog", WS_OVERLAPPEDWINDOW, 0, 0, 600, 400, NULL, NULL, hInstance, NULL );
ShowWindow (hwnd, SW_SHOWNORMAL);
UpdateWindow (hwnd);
///////////
MSG msg;
while (GetMessage (&msg, NULL, 0, 0 ))
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}//endof while
return 0;
} //endof winMain()
LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)
{ HDC hDC;///handle to DC
HBRUSH hBrush; ///用的是画刷，画出的图里面是有颜色的
HPEN hPen ;///handle to object画笔画出的只是线条
PAINTSTRUCT PtStr;
POINT points [6] = { { 100,212}, {70,227},{70,300},{130,300},{130,227},{100,212} };//用6个点确定一个五边形
switch(uMsg)
{
case WM_LBUTTONDOWN:
{/////此代码用于创建按钮，未成功
CWnd *pWnd;
pWnd=CWnd::FromHandle(hwnd);
CRect rect;
GetClientRect(hwnd,rect);
rect.left +=300;
rect.right =rect.left +100;
rect.top +=200;
rect.bottom =rect.top +50;
button.Create ("Button",WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,rect,pWnd,201);
}
break;
/////////////
case WM_RBUTTONDOWN:
ShowWindow (hwnd, SW_MAXIMIZE);
break;
case WM_PAINT://///填充图形
hDC = BeginPaint (hwnd , & PtStr);
hPen = (HPEN) GetStockObject(NULL_PEN);//默认颜色
SelectObject (hDC,hPen);
hBrush = (HBRUSH)GetStockObject(BLACK_BRUSH);
SelectObject (hDC,hBrush);
LineTo (hDC, 70, 70);
DeleteObject(hPen);
hPen = CreatePen(PS_SOLID,1,RGB(255,0,0));///pen style,pen width,pen color定义画笔
SelectObject(hDC,hPen);
//LineTo(hDC,180,90);/////3点确定一个三角形
//LineTo(hDC,100,137);
//LineTo(hDC,70,70);
Polyline(hDC,points,6);//左边最下方显示的图形
Arc(hDC,63,137,138,212,100,137,100,137);
Arc(hDC,83,157,91,165,87,161,87,161);
Arc(hDC,118,157,126,165,122,161,122,161);
RoundRect(hDC,101,185,116,193,15,8);
DeleteObject(hPen);
DeleteObject(hBrush);
EndPaint(hwnd,&PtStr);
return 0;
case WM_USER:
{
/* CWnd *pWnd;
pWnd=CWnd::FromHandle(hwnd);
CRect rect;
GetClientRect(hwnd,rect);
rect.left +=190;
rect.right =rect.left +50;
rect.top +=80;
rect.bottom =rect.top +50;
button.Create("Button",WS_CHILD|WS_VISIBLE|BS_PUSHBUTTON,rect,pWnd,201);*/
}
break;
case WM_CLOSE:
if(IDYES == MessageBox(hwnd,"是否真的结束?","要退出程序吗？",MB_YESNO))
{
DestroyWindow(hwnd);
}//ENDOF IF
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
///////////////
case WM_KEYUP: // 当收到按ESC键的消息时，（如果当前是全屏模式，必须要加入退出方式）
switch (wParam) {
case VK_ESCAPE:
MessageBox(hwnd,"您按下了ESC键","消息提示",MB_OK|MB_ICONEXCLAMATION);
return 0;
break;
}
break;
default:
return DefWindowProc(hwnd,uMsg, wParam, lParam);
}//endof swith()
return 0;
}//end of WinSunProc()
BOOL CButton(WPARAM wParam,LPARAM lParam)
{
WORD nCode = HIWORD(wParam);
WORD nID = LOWORD(wParam);
if((nCode==BN_CLICKED)&&(nID==201))
{
MessageBox(hwnd,"hello","你好",MB_OK);
}
return CButton(wParam,lParam);
}
