时钟不按系统时间动的问题。。求助~~
#include <windows.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#define pi 3.1415926
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
MSG Message;
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;
RegisterClass(&WndClass);
HWND hWnd;
hWnd=CreateWindow("WinFill", //生成窗口
"时 钟 ",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
0,
CW_USEDEFAULT,
0,
NULL,
NULL,
hInstance,
NULL);
ShowWindow(hWnd,nCmdShow); //显示窗口
UpdateWindow(hWnd);
while(GetMessage(&Message,0,0,0)) //消息循环
{
TranslateMessage(&Message);
DispatchMessage(&Message);
}
return Message.wParam;
}
SYSTEMTIME iptime;
int m=1,n=60;
int p,q=12;
//VOID WINAPI GetLocalTime(LPSYSTEMTIME lpSystemTime); //获取当前系统时间函
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
::PAINTSTRUCT paint;
switch(message)
{
case WM_PAINT:
{
hdc=BeginPaint(hwnd,&paint);
HPEN hpen=::CreatePen(0,3,RGB(0,255,0));
::SelectObject(hdc,hpen);
Ellipse(hdc,200,200,400,400);
for(p=0;p<60;p++)
{
double Rad=2*pi*p/60;
MoveToEx(hdc,(int)(300+100*(double)sin(Rad)),(int)(300-100*(double)cos(Rad)),NULL);
LineTo(hdc,(int)(300+90*(double)sin(Rad)),(int)(300-90*(double)cos(Rad)));
}
HPEN hpen1=::CreatePen(0,3,RGB(255,0,0));
::SelectObject(hdc,hpen1);
for(p=0;p<q;p++)
{
double Rad=2*pi*p/q;
MoveToEx(hdc,(int)(300+100*(double)sin(Rad)),(int)(300-100*(double)cos(Rad)),NULL);
LineTo(hdc,(int)(300+80*(double)sin(Rad)),(int)(300-80*(double)cos(Rad)));
}
HPEN spen=::CreatePen(0,3,RGB(0,0,0));
::SelectObject(hdc,hpen1);
MoveToEx(hdc,300,300,NULL);
GetLocalTime(&iptime);
HPEN hpen3=::CreatePen(PS_DOT,3,RGB(255,0,255));
::SelectObject(hdc,hpen3);
double hour=(iptime.wHour*3600+iptime.wMinute*60.0+iptime.wSecond)/3600/(30/pi);
::MoveToEx(hdc,300,300,0);
LineTo(hdc,int(300+20*cos(hour)),int(300+20*sin(hour)));
double minu=(iptime.wMinute*60+iptime.wSecond)/60/(30/pi);//为什么把后面改成/60/30*pi后分钟不转了？？
HPEN hpen2=::CreatePen(0,3,RGB(255,255,0));
::SelectObject(hdc,hpen2);
::MoveToEx(hdc,300,300,0);
LineTo(hdc,int(300+40*cos(minu)),int(300+40*sin(minu)));
double x=iptime.wSecond*pi/30;
::MoveToEx(hdc,300,300,0);
LineTo(hdc,int(300+80*cos(x)),int(300+80*sin(x)));
if(1)
{
Sleep(1000);
InvalidateRect(hwnd,NULL,1);
m++;
}
EndPaint(hwnd,&paint);
};break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,message,wParam,lParam);
}
return 0;
}
问题一：不按系统时间转动
问题二：见注释。。
[解决办法]
- C/C++ code
//#include "StdAfx.h"#include <windows.h>#include <string.h>#include <stdlib.h>#include <stdio.h>#include <math.h>#define pi 3.1415926SYSTEMTIME iptime;int m=1,n=60;int p,q=12; LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ MSG Message; 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; RegisterClass(&WndClass); HWND hWnd; hWnd=CreateWindow("WinFill", //生成窗口 "时 钟 ", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); ShowWindow(hWnd,nCmdShow); //显示窗口 UpdateWindow(hWnd); SetTimer(hWnd,1,1000,NULL); while(GetMessage(&Message,0,0,0)) //消息循环 { TranslateMessage(&Message); DispatchMessage(&Message); } return Message.wParam;}//VOID WINAPI GetLocalTime(LPSYSTEMTIME lpSystemTime); //获取当前系统时间函LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam){ HDC hdc; ::PAINTSTRUCT paint; switch(message) { case WM_PAINT: { hdc=BeginPaint(hwnd,&paint); HPEN hpen=::CreatePen(0,3,RGB(0,255,0)); ::SelectObject(hdc,hpen); Ellipse(hdc,200,200,400,400); for(p=0;p<60;p++) { double Rad=2*pi*p/60; MoveToEx(hdc,(int)(300+100*(double)sin(Rad)),(int)(300-100*(double)cos(Rad)),NULL); LineTo(hdc,(int)(300+90*(double)sin(Rad)),(int)(300-90*(double)cos(Rad))); } HPEN hpen1=::CreatePen(0,3,RGB(255,0,0)); ::SelectObject(hdc,hpen1); for(p=0;p<q;p++) { double Rad=2*pi*p/q; MoveToEx(hdc,(int)(300+100*(double)sin(Rad)),(int)(300-100*(double)cos(Rad)),NULL); LineTo(hdc,(int)(300+80*(double)sin(Rad)),(int)(300-80*(double)cos(Rad))); } HPEN spen=::CreatePen(0,3,RGB(0,0,0)); ::SelectObject(hdc,hpen1); MoveToEx(hdc,300,300,NULL); //GetLocalTime(&iptime); HPEN hpen3=::CreatePen(PS_DOT,3,RGB(255,0,255)); ::SelectObject(hdc,hpen3); double hour=(iptime.wHour*3600+iptime.wMinute*60.0+iptime.wSecond)/3600/(30/pi); ::MoveToEx(hdc,300,300,0); LineTo(hdc,int(300+20*cos(hour)),int(300+20*sin(hour))); double minu=(iptime.wMinute*60+iptime.wSecond)/60/(30/pi);//为什么把后面改成/60/30*pi后分钟不转了？？ HPEN hpen2=::CreatePen(0,3,RGB(255,255,0)); ::SelectObject(hdc,hpen2); ::MoveToEx(hdc,300,300,0); LineTo(hdc,int(300+40*cos(minu)),int(300+40*sin(minu))); double x=iptime.wSecond*pi/30; ::MoveToEx(hdc,300,300,0); LineTo(hdc,int(300+80*cos(x)),int(300+80*sin(x))); char pstrtime[50]; sprintf(pstrtime,"%d:%d:%d",iptime.wHour,iptime.wMinute,iptime.wSecond); ::TextOut(hdc,0,0,pstrtime,strlen(pstrtime)); /* if(1) { Sleep(1000); InvalidateRect(hwnd,NULL,1); m++; } */ EndPaint(hwnd,&paint); break; } case WM_DESTROY: PostQuitMessage(0); break; case WM_TIMER: GetLocalTime(&iptime); InvalidateRect(hwnd,NULL,1); break; default: return DefWindowProc(hwnd,message,wParam,lParam); } return 0;}