ABLE Ap1400, Руководство программиста

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Ref: "Ap1400ProgGuide1_2.docx" Page 27 of 42
Document Revision: “1.2”
Document Date: “9 Apr. 2013”
GetDllVersion
Get the USBPrintDll full version information
Prototype
SUSBPrintVersion WINAPI GetDllVersion(void);
Description
This function returns the full version information of the USBPrintDll. This function
has no activity on the USB bus and is provided for tracing purposes. An application
should check this version number before accessing the USB bus to ensure correct
alignment between builds.
Arguments
None
Returns
Returns a populated SUSBPrintVersion structure describing the major & minor
version numbers and the build number. If an error occurs then the system error
code is set. Use GetLastError() to retrieve this.
The SUSBPrintVersion structure is defined as;
//
//SUSBPrintVersion
typedef struct SUSBPrintVersion
{
UINT m_uiMajor1;
UINT m_uiMajor2;
UINT m_uiMin1;
UINT m_uiMin2;
UINT m_uiBuild;
} SUSBPrintVersion;
//
//Define pointers to this type
typedef SUSBPrintVersion *PSUSBPrintVersion;
typedef PSUSBPrintVersion *LPSUSBPrintVersion;
Example
SUSBPrintVersion sVersion;
CString csDllVersion;
sVersion=GetDllVersion();
csDllVersion.Format(_T( "Version [V%d.%d.%d.%d Build %03d.]." ),
sVersion.m_uiMajor1,
sVersion.m_uiMajor2,
sVersion.m_uiMin1,
sVersion.m_uiMin2,
sVersion.m_uiBuild);
TRACE(_T(“USBPrintDll-%s”),csDllVersion);