IG_dspl_image

This function draws an image onto the printer device context.

Declaration:

	Copy Code
AT_ERRCOUNT ACCUAPI IG_dspl_image_print( [IN] HIGEAR hIGear, [IN] DWORD dwGrpID, [IN] HDC hDC, [IN] BOOL bDirectToDriver );

Arguments:

Name	Type	Description
hIGear	HIGEAR	ImageGear handle of image.
dwGrpID	DWORD	Identifier of group from which to get image options.
hDC	HDC	Handle of device context on which to draw the image.
bDirectToDriver	BOOL	If TRUE then ImageGear does not perform image scaling but use the operating system's and driver's capabilities for this. If FALSE then ImageGear performs the scaling.

Return Value:

Returns the number of ImageGear errors that occurred during this function call.

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++.

Sample:

Print, Display, MFC, Poster, MFC Threads, ArtX

Example:

	Copy Code
HMIGEAR image; DOCINFO docInfo; PRINTDLG printDialog; // Load the image we want to print. IG_load_file("sample.bmp", &image); // Set the Windows related document printing parameters. memset(&docInfo, 0, sizeof(DOCINFO)); docInfo.cbSize = sizeof(DOCINFO); docInfo.lpszDocName = "Sample Document"; if (PrintDlg(&printDialog)) { // Start the print job and a new page. StartDoc(printDialog.hDC, &docInfo); StartPage(printDialog.hDC); // Print the image directly to the device using the default print options group. IG_dspl_image_print(image, (DWORD)IG_GRP_DEFAULT_PRINT, printDialog.hDC, TRUE); // Signal the end of the page and the print job. EndPage(printDialog.hDC); EndDoc(printDialog.hDC); }

Copy Code

    HMIGEAR image;
    DOCINFO docInfo;
    PRINTDLG printDialog;

    // Load the image we want to print.
    IG_load_file("sample.bmp", &image);

    // Set the Windows related document printing parameters.
    memset(&docInfo, 0, sizeof(DOCINFO));
    docInfo.cbSize = sizeof(DOCINFO);
    docInfo.lpszDocName = "Sample Document";

    if (PrintDlg(&printDialog))
    {
        // Start the print job and a new page.
        StartDoc(printDialog.hDC, &docInfo);
        StartPage(printDialog.hDC);

        // Print the image directly to the device using the default print options group.
        IG_dspl_image_print(image, (DWORD)IG_GRP_DEFAULT_PRINT, printDialog.hDC, TRUE);

        // Signal the end of the page and the print job.
        EndPage(printDialog.hDC);
        EndDoc(printDialog.hDC);
    }

Remarks:

Print resolution depends on the current printer setting. bDirectToDriver parameter allows you to either perform image scaling inside of ImageGear or leave this task to the printer driver and operating system. Usually, direct to driver printing (bDirectToDriver=TRUE) results in smaller output size and works faster, but not using it produces better quality and allows you to use ImageGear capabilities such as anti-aliasing during printing.

Special predefined option group IG_GRP_DEFAULT_PRINT can be used to print an image with the most common parameters.

If you are using ImageGear ArtX Component in your application please use IG_dspl_artx_image_print() function.

For an overview on printing, see the section Printing Images. For more information on option groups, see the section Viewing.