更新时间:2015-12-20 18:33:38浏览次数:1+次
我们先来看看要实现的图形效果,如下图所示:
#include "windows.h"
#include <Windowsx.h>//GET_X_LPARAM,GET_Y_LPARAM宏需要这个头文件
#include <tchar.h>
// - 项目是Unicode字符集
LRESULT CALLBACK WinProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
PAINTSTRUCT ps;
TCHAR Info[100]=_T("C++技术网http://www.cjjjs.com");
RECT rect;
switch (message)
{
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
GetClientRect(hwnd,&rect);
SelectObject(hdc,CreatePen(PS_DASH,1,RGB(255,0,0)));//选择使用画笔
SetBkColor(hdc,RGB(255,255,0));//设置背景颜色
for (int i=10;i<50;i++)
{
MoveToEx(hdc,0,i,NULL);//移动起点,起点y轴增加
LineTo(hdc,rect.right/2,3*rect.bottom/4-i);//客户区左半边的斜线,终点y轴减小
LineTo(hdc,rect.right,rect.top+i);//客户区右半边的斜线,默认的起点就是上面结束的位置,终点是y周是增加的,正好和起点不一样
}
for (int i=10;i<50;i++)
{
//顶上的横线
MoveToEx(hdc,0,i,NULL);
LineTo(hdc,rect.right,i);
}
DeleteObject(SelectObject(hdc,GetStockObject(WHITE_PEN)));//删除画笔
EndPaint(hwnd,&ps);
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
default:
return DefWindowProc(hwnd, message, wParam, lParam);
}
}
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrev,LPSTR lpCmd,int iShow)
{
TCHAR ClassName[] = _T("MyClass");
TCHAR title1[] = _T("C++技术网http://www.cjjjs.com");
WNDCLASS wndClass;
wndClass.cbClsExtra=0;
wndClass.cbWndExtra=0;
wndClass.hbrBackground= (HBRUSH)GetStockObject(BLACK_BRUSH);
wndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
wndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
wndClass.hInstance = hInstance;
wndClass.lpfnWndProc = WinProc;
wndClass.lpszClassName = ClassName;
wndClass.lpszMenuName=NULL;
wndClass.style=CS_HREDRAW|CS_VREDRAW;
if(!RegisterClass(&wndClass))
return 0;
HWND hwnd = CreateWindow(ClassName,title1,WS_OVERLAPPEDWINDOW,0,0,440,400,NULL,NULL,hInstance,NULL);
ShowWindow(hwnd,SW_SHOWNORMAL);
MSG msg;
while (GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
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