vc 选择默认打印机驱动(选择默认打印机驱动的VC重写方案)

Introduction

When it comes to printing documents and photos from your computer, having the right printer driver installed is crucial. The printer driver is the software that communicates with your printer and enables your computer to recognize and use the printer’s features. In this article, we will discuss how to select a default printer driver in VC++.

Selecting the Default Printer Driver

To select the default printer driver in VC++, we first need to use the PrintDlgEx function to retrieve information about the printer dialog box. This function returns a structure that contains information about the printer selected by the user, including the printer driver name and driver data.

We can then use the GetPrinterDriver function to obtain information about the default printer driver installed on the user’s system. This function takes the name of the printer driver as an input and retrieves information such as the driver version, the number of supported paper sizes, and the default paper size.

Finally, we can use the SetDefaultPrinter function to set the default printer driver for the system. This function takes the name of the printer as an input and sets it as the default printer for all applications running on the system.

Code Example

Below is an example code snippet demonstrating how to select a default printer driver in VC++:

PRINTDLGEX pd;

ZeroMemory(&pd, sizeof(PRINTDLGEX));
pd.lStructSize = sizeof(PRINTDLGEX);
pd.Flags = PD_RETURNDEFAULT | PD_USEDEVMODECOPIESANDCOLLATE;
PrintDlgEx(&pd);
DWORD dwNeeded, dwDriverVersion;
TCHAR szDriverName[MAX_PATH];
TCHAR szDriverDir[MAX_PATH];
GetPrinterDriver(pd.hDevMode,pd.hDevNames,5,(LPBYTE)szDriverName,MAX_PATH,&dwNeeded);
GetPrinterDriverDirectory(NULL,NULL,1,(LPBYTE)szDriverDir,MAX_PATH,&dwNeeded);
GetPrinterDriverVersion(szDriverName,5,&dwDriverVersion);
SetDefaultPrinter(pd.hDevNames);

Conclusion

Selecting the default printer driver in VC++ can be a simple process with the right knowledge and tools. By using the PrintDlgEx, GetPrinterDriver, and SetDefaultPrinter functions, you can set the default printer driver for your system with ease.

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