WINCE中的一些常用代码-创新互联
一、窗口全屏显示,去掉任务栏

//全屏显示
//隐藏HHTaskBar窗口代码如下:
HWND hTaskBar = ::FindWindow(TEXT("HHTaskBar"), NULL);
if (hTaskBar != NULL)
{
::EnableWindow(hTaskBar, FALSE);
::ShowWindow(hTaskBar, SW_HIDE);
}
int iFullWidth = GetSystemMetrics(SM_CXSCREEN);
int iFullHeight = GetSystemMetrics(SM_CYSCREEN);
::SetWindowPos(this->m_hWnd, HWND_TOPMOST, 0, 0, iFullWidth, iFullHeight,
SWP_NOOWNERZORDER|SWP_SHOWWINDOW);二、获取当前程序路径
CString CscaleweightDlg::GetAppllicationPath()
{
WCHAR buff[255]={0};
::GetModuleFileName(0,buff,255);
CString strAppFullName;
strAppFullName.Format(_T("%s"),buff);
CString strAppPath = _T("");
strAppPath = strAppFullName.Left(strAppFullName.ReverseFind('\\')+1);
return strAppPath;
}三、加载字库
//加载字体
CString strFontPath = GetAppllicationPath()+_T("msyh.ttf");
if (NULL != AddFontResource(strFontPath))
{
::SendMessage( HWND_BROADCAST, WM_FONTCHANGE, 0, 0);
}
else
{
AfxMessageBox(L"字体加载失败");
}程序退出时,卸载字库
CString strFontPath = GetApplicationPath()+_T("msyh.ttf");
if(RemoveFontResource(strFontPath))
{
::SendMessage(HWND_BROADCAST, WM_FONTCHANGE, 0, 0);
}
else
AfxMessageBox(L"Failed to UNLOAD font!");四、加载位图用LoadImage无效
HBITMAP hBitmap = (HBITMAP)::SHLoadDIBitmap(szBitmapFile);
五、要以共享MFC的DLL库的方式发布程序,须将如下目录中DLL全部复制到目标机器上。
C:\Program Files (x86)\Microsoft Visual Studio 8\VC\ce\Dll\armv4i
六、wchar_t*转char*
如,sCaption为 LPCTSTR类型字符串,要转成char *字符串,如下:
int num = WideCharToMultiByte(CP_OEMCP, NULL, sCaption, -1, NULL, 0, NULL, FALSE); char *pChar = new char[num]; WideCharToMultiByte(CP_OEMCP, NULL, sCaption, -1, pChar, num, NULL, FALSE);
七、字体平滑,需要修改注册表
HKEY_LOCAL_MACHINE\\System\\GDI\\ClearType Default=2
八、不关闭屏幕,常期显示工作界面
//电源参数请求更新
HANDLE hevReloadActivityTimeouts = OpenEvent(EVENT_ALL_ACCESS, FALSE,
_T("PowerManager/ReloadActivityTimeouts"));
if (hevReloadActivityTimeouts)
{
SetEvent(hevReloadActivityTimeouts);
CloseHandle(hevReloadActivityTimeouts);
}同时,在注册表中也要修改超时设置。
九、Sqlite数据库读写
void CSimpleModeData::TempTableWrite(CString CarNo,CString strWeight,CString GoodsName,
CString Time)
{
CString str ;
str.Format(_T("insert into SimpleModeTempTable(CarNo,GoodsName,Weight,Time)\
values('%s','%s','%s','%s')"),CarNo,strWeight,GoodsName,
Time);
TRACE(str);
m_sqliteDB.execQuery(str);
}
BOOL CSimpleModeData::TempTableRead(CString strCarNo)
{
CString str ;
str.Format(_T("select * from SimpleModeTempTable where CarNo = '%s'"));
TRACE(str);
CppSQLite3Query query = m_sqliteDB.execQuery(str);
if(!query.eof())
{
wcscpy_s(CGlobal::g_TempTable.CarNo,20,query.fieldValue(1));
wcscpy_s(CGlobal::g_TempTable.GoodsName,20 ,query.fieldValue(2));
wcscpy_s(CGlobal::g_TempTable.Weight,20,query.fieldValue(3));
return TRUE;
}
query.finalize();
return FALSE;
}十、软件重启
#include "windows.h"
#include "winioctl.h"
#define POWER_STATE_RESET (DWORD)(0x00800000)
#define POWER_FORCE (DWORD)(0x00001000)
extern "C" __declspec(dllimport) DWORD SetSystemPowerState(LPCWSTR pwsSystemState,
DWORD StateFlags,DWORD Options);
void CtestDlg::OnBnClickedButton2()
{
SetSystemPowerState(NULL, POWER_STATE_RESET, POWER_FORCE);
}十一、字符串转浮点数
_tstof在WinCE中未实现,需要自己实现。如果转成double型可以如下:
double StringToDouble(LPCTSTR lpszSrc)
{
TCHAR * endptr;
return _tcstod(lpszSrc, &endptr);
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