#include "gpio.h"
HANDLE hFile=INVALID_HANDLE_VALUE;
void CGPIOBeepDlg::OnOpenPio1()
{
BOOL ret;
BYTE pinnum=10;
hFile=CreateFile(TEXT("PIO1:"),GRNERIC_READ|GENERIC_WRITE,0,NULL,OPEN_EXISTING,0,0);
if(hFile==INVALID_HANDLE_VALUE)
{
MessageBox(_T("打开GPIO驱动失败！"));
return;
}
else
MessageBox(_T("打开GPIO驱动成功！"));
ret=::DeviceIoControl(hFile,IOCTL_GPH_SET_PIN_OUT,&pinnum,1,NULL,0,NULL,NULL);
if(ret!=TRUE)
{
OnClosePio1();
MessageBox(_T("设置GPH10引脚输出失败！"));
return;
}
CButton*pOpenButten=(CButton*)GetDlgItem(IDC_OPEN_PIO1);
CButton*pCloseButten=(CButton*)GetDlgItem(IDC_CLOSE_PIO1);
pOpenButton->EnableWindow(FALSE);
pCloseButton->EnableWindow(TRUE);
}
一直错误，照着书上敲的，就一直错误
F:\text\GPIOBeep\GPIOBeepDlg.cpp(72) : error C2065: 'GRNERIC_READ' : undeclared identifier
F:\text\GPIOBeep\GPIOBeepDlg.cpp(90) : error C2065: 'pOpenButton' : undeclared identifier
F:\text\GPIOBeep\GPIOBeepDlg.cpp(90) : error C2227: left of '->EnableWindow' must point to class/struct/union
F:\text\GPIOBeep\GPIOBeepDlg.cpp(91) : error C2065: 'pCloseButton' : undeclared identifier
F:\text\GPIOBeep\GPIOBeepDlg.cpp(91) : error C2227: left of '->EnableWindow' must point to class/struct/union
Error executing clarm.exe.
GPIOBeep.exe - 5 error(s), 0 warning(s)
