mytest2.cpp

颜色现行变化的 C++程序。运行后 可 实现颜色的线性变化。

#include<windows.h>

LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInst,LPSTR lpszCmdLine,int nCmdShow)
{
	HWND hwnd;
	MSG Msg;
	WNDCLASS wndclass;
	char lpszClassName[]="曲红伟";
	char lpszTitle[]="060701022";
	wndclass.style=0;
	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=lpszClassName;
	if(!RegisterClass(&wndclass))
	{
		MessageBeep(0);
		return FALSE;
	}
	hwnd=CreateWindow(lpszClassName,lpszTitle,WS_OVERLAPPEDWINDOW|WS_VSCROLL|WS_HSCROLL,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
	ShowWindow(hwnd,nCmdShow);
	UpdateWindow(hwnd);
	while(GetMessage(&Msg,NULL,0,0))
	{
		TranslateMessage(&Msg);
		DispatchMessage(&Msg);
	}
return Msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
	HDC hdc;
	PAINTSTRUCT ps;
	HPEN hpen;
	HBRUSH hbrush;

switch(message)
{
case WM_PAINT:
        hdc=BeginPaint(hwnd,&ps);//取得设备环境句柄
		SetMapMode(hdc,MM_TEXT);//设置映射模式
		SetWindowExtEx(hdc,150,150,NULL);//设置窗口区域
		SetViewportExtEx(hdc,150,150,NULL);//设置视口区域
 
		
	hpen=CreatePen(PS_SOLID,100,RGB(255,255,255));
		hbrush=	CreateSolidBrush(RGB(255,255,255));//设置画刷(先定义后使用)
		SelectObject(hdc,hpen);
		SelectObject(hdc,hbrush);
Rectangle(hdc,0,0,200,5000);//画矩形
 
	hpen=CreatePen(PS_SOLID,100,RGB(190,190,190));
		hbrush=	CreateSolidBrush(RGB(190,190,190));//设置画刷
		SelectObject(hdc,hpen);
		SelectObject(hdc,hbrush);
Rectangle(hdc,200,0,400,5000);
 
	hpen=CreatePen(PS_SOLID,100,RGB(130,130,130));
		hbrush=	CreateSolidBrush(RGB(130,130,130));//设置画刷
		SelectObject(hdc,hpen);
		SelectObject(hdc,hbrush);
Rectangle(hdc,400,0,600,5000);
 
	hpen=CreatePen(PS_SOLID,100,RGB(50,50,50));
		hbrush=	CreateSolidBrush(RGB(50,50,50));//设置画刷
		SelectObject(hdc,hpen);
		SelectObject(hdc,hbrush);
Rectangle(hdc,600,0,800,5000);
 
	hpen=CreatePen(PS_SOLID,100,RGB(0,0,0));
		hbrush=	CreateSolidBrush(RGB(0,0,0));//设置画刷
		SelectObject(hdc,hpen);
		SelectObject(hdc,hbrush);
Rectangle(hdc,800,0,10000,10000);
	hpen=CreatePen(PS_SOLID,100,RGB(255,255,255));
SelectObject(hdc,hpen);


 MoveToEx(hdc,100,100,NULL);
LineTo(hdc,700,400);

	EndPaint(hwnd,&ps);				//结束绘图
		return(0);
case WM_DESTROY:
	PostQuitMessage(0);
default:
	return DefWindowProc(hwnd,message,wParam,lParam);
}
return(0);
}