这是全部的程序
麻烦懂的人给看看吧
#include <windows.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam);
BOOL InitWindowsClass(HINSTANCE hInstance);
BOOL InitWindows(HINSTANCE hInstance,int nCmdShow);
HWND hWndMain;
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdshow)
{
MSG Message;
if(!InitWindowsClass(hInstance))
return FALSE;
if(!InitWindows(hInstance,nCmdShow))
return FALSE;
while(GetMessage(&Message,0,0,0))
{
TranslateMessage(&Message);
DispatchMessage(&Message);
}
return Message.wParam;
}
long WINAPI WndProc(HWND hWnd,UINT iMessage,UINT wParam,LONG lParam)
{
HDC hDC;
HBRUSH hBrush;
HPEN hPen;
PAINTSTRUCT PtStr;
switch(iMessage)
{
case WM_PAINT:
    hDC=BeginPaint(hWnd,&PtStr);
    SetMapMode(hDC,MM_ANISOTROPIC);
    hPen=(HPEN)GetStockObject(BLACK_PEN);
    hBrush=(HBRUSH)GetStockObject(DKGRAY_BRUSH);
    SelectObject(hDC,hBrush);
    SelectObject(hDC,hPen);
    RoundRect(hDC,50,120,100,200,15,15);
    hBrush=(HBRUSH)GetStockObject(LTGRAY_BRUSH);
    SelectObject(hDC,hBrush);
    Ellipse(hDC,150,50,200,150);
    hBrush=(HBRUSH)GetStockObject(HOLLOW_BRUSH);
    SelectObject(hDC,hBrush);
    Pie(hDC,250,50,300,100,250,50,300,50);
    EndPaint(hWnd,&PtStr);
    return 0;
case WM_DESTROY:
    PostQuitMessage(0);
    return 0;
default:
return(DefWindowProc(hWnd,iMessage,wParam,lParam));
}
}
BOOL InitWindows(HINSTANCE hInstance,int nCmdShow)
{
HWND hWnd;
hWnd=CreateWindow("WinFill",
                 "填充示例程序",
                 WS_OVERLAPPEDWINDOW,
                 CW_USEDEFAULT,
                 0,
                 CW_USEDEFAULT,
                 0,
                 NULL,
                 NULL,
                 hInstance,
                 NULL);
if(!hWnd)
return FALSE;
hWndMain=hWnd;
ShowWindow(hWnd,nCmdShow);
UpdateWindow(hWnd);
return TRUE;
}
BOOL InitWindowsClass(HINSTANCE hInstance)
{
WNDCLASS WndClass;
WndClass.cbClsExtra=0;
WndClass.cbWndExtra=0;
WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
WndClass.hIcon=LoadIcon(NULL,"END");
WndClass.hInstance=hInstance;
WndClass.lpfnWndProc=WndProc;
WndClass.lpszClassName="WinFill";
WndClass.lpszMenuName=NULL;
WndClass.style=CS_HREDRAW|CS_VREDRAW;
return RegisterClass(&WndClass);
}