Rectangle Program with Filling Source code Windows SDK / Visual C++

Source Code in Visual Programming Step by step procedural algorithm Rectangle Program with Filling
#include<windows.h>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPreInstance,PSTR szCmdLine,int iCmdShow)
{
static TCHAR szAppname[]=TEXT("Rectangle and Round rectangle--*john*");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
wndclass.style=CS_HREDRAW|CS_VREDRAW;
wndclass.lpfnWndProc=WndProc;
wndclass.cbClsExtra=0;
wndclass.cbWndExtra=0;
wndclass.hInstance=hInstance;
wndclass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndclass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
wndclass.lpszMenuName=NULL;
wndclass.lpszClassName=szAppname;
if(!RegisterClass(&wndclass))
{
MessageBox(NULL,TEXT("This programreq.windows nt"),
szAppname,MB_ICONERROR);
return 0;
}
hwnd=CreateWindow(szAppname,TEXT("Rectangle and Round Rectangle--- *john *"),
WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
ShowWindow(hwnd,iCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;



}
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
static int x,y;
HDC hdc;
PAINTSTRUCT ps;
RECT rect;
switch(msg)
{
case WM_SIZE:
x=LOWORD(lParam);
y=HIWORD(lParam);
return 0;

case WM_PAINT:
hdc=BeginPaint(hwnd,&ps);
Rectangle(hdc,x/6,y/6,5*x/6,5*y/6);
SelectObject(hdc,GetStockObject(GRAY_BRUSH));
RoundRect(hdc,x/4,y/4,3*x/4,3*y/4,x/4,y/4);
EndPaint(hwnd,&ps);
return 0;

case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,msg,wParam,lParam);
}
return 0;
}

Rectangle Program with Filling Output Screen shot CS1255 VISUAL PROGRAMMING LABRectangle Program with Filling Output Screen shot VISUAL PROGRAMMING LAB

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