ledtest.cpp

pxa270实验板上的

// LedTest.cpp : 定义应用程序的入口点。
//

#include "stdafx.h"
#include "LedTest.h"
#include <windows.h>
#include <commctrl.h>


// 全局变量:
HINSTANCE			g_hInst;			// 当前实例
HANDLE	hDev=NULL;
const BYTE ledfont[]={0xfc,0x60,0xda,0xf2,0x66,0xb6,0xbe,0xe0,0xfe,0xf6};


// 此代码模块中包含的函数的前向声明:

BOOL CALLBACK DialogProc(HWND hDlg,UINT uMsg,WPARAM wParam,LPARAM lParam);


int WINAPI WinMain(HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPTSTR    lpCmdLine,
                   int       nCmdShow)
{

	return DialogBox(hInstance,MAKEINTRESOURCE(IDD_DIALOG1),NULL,(DLGPROC)DialogProc);
	
}



// “关于”框的消息处理程序。
BOOL CALLBACK DialogProc(HWND hDlg,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
	char str[16];
    switch (uMsg)
    {
        case WM_INITDIALOG:
			hDev=CreateFile(TEXT("LED2:"),GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,0);
			if(hDev==INVALID_HANDLE_VALUE)
			{
				MessageBox(NULL,_T("Can't open device."),_T("Error"),MB_OK|MB_ICONINFORMATION);
				EndDialog(hDlg,0);
				return FALSE;
			}
			return TRUE;
		case WM_CLOSE:
            EndDialog(hDlg, 0);
            return TRUE;

        case WM_COMMAND:
            if ((LOWORD(wParam) == IDC_BUTTON1))
            {
                BOOL b;
				DWORD bytes;
				char data[4];
				UINT val=GetDlgItemInt(hDlg,IDC_EDIT1,&b,FALSE);
				memset(data,0,4);
				if(b)
				{
					int i,n;
					

					n=sprintf(str,"%d",val);
					n=n>4?4:n;
					for(i=0;i<n;i++)
					{data[i]=ledfont[str[i]-'0'];
					WriteFile(hDev,&data[i],1,&bytes,NULL);
					Sleep(1000);
					}

				}
				

            }
			return TRUE;
	}
	return FALSE;
}