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- DIB Screen Capture/Printing API Specification
- By Pat Schreiber and Mark Bader
- Version dated October 8, 1991
- Copyright (c) 1991 Microsoft Corporation. All rights reserved.
-
-
- PrintWindow
- Syntax WORD PrintWindow(hWnd, fPrintArea, fPrintOpt,
- wXScale, wYScale, szJobName)
-
- This function prints an entire window or its client
- area on the current default printer. Banding is used
- if the printer driver supports it.
-
- Parameter Type/Description
- hWnd HWND Specifies the window to be
- printed.
-
- fPrintArea WORD Specifies the area(s) of the
- window to be printed. See
- below for a listing of the
- possible values for this
- parameter.
-
- fPrintOpt WORD Species the printing options.
- See below for a listing of the
- possible values for this
- parameter.
-
- wXScale WORD Specifies the x-axis scaling
- factor for the printed window.
- The x and y scaling factors
- are only used if the PW_SCALE
- option below is selected.
-
- wYScale WORD Specifies the y-axis scaling
- factor.
-
- szJobName LPSTR Specifies the name of the print
- job. This string is used in
- the job name sent to the print
- spooler, as well as in the
- print dialog box.
-
- The fPrintArea parameter must be set to one of the
- following:
-
- Value Meaning
- PW_WINDOW Print the entire window.
-
- PW_CLIENT Print the client area of the
- window.
-
- The fPrintOpt parameter must be set to one of the
- following:
-
- Value Meaning
- PW_BESTFIT Fits the printed screen on the page
- in as large of a area as possible
- while still retaining the correct
- screen aspect ratio. The wXScale
- and wYScale parameters are not
- used if this option is selected.
- This is the default value.
-
- PW_STRETCHTOPAGE Stretches the printed screen to
- fill up the entire printed page.
- The wXScale and wYScale parameters
- are not used if this option is
- selected.
-
- PW_SCALE Scales the printed screen by the
- integer scaling factors specified
- in the wXScale and wYScale
- parameters. If the scaling is
- set too large, the screen may
- extend off the printed page and
- will be clipped.
-
- Return Value 0 if successful, or one of: ERR_DIBFUNCTION,
- ERR_INVALIDHANDLE, ERR_LOCK, ERR_SETABORTPROC,
- ERR_STARTDOC, ERR_NEWFRAME, ERR_ENDDOC, ERR_GETDC,
- ERR_STRETCHDIBITS. These constants are defined in
- errors.h.
-
- PrintScreen
- Syntax WORD PrintScreen(rRegion, fPrintOpt, wXScale,
- wYScale, szJobName)
-
- This function prints the specified area of the screen
- on the default printer.
-
- Parameter Type/Description
- rRegion LPRECT Specifies the region of the
- screen (in screen coordinates)
- to be printed. To print the
- entire screen, set this rect
- to encompass the entire
- screen.
-
- fPrintOpt WORD Species the printing options.
-
- wXScale WORD Specifies the x-axis scaling
- factor for the printed window.
- The x and y scaling factors
- are only used if the PW_SCALE
- option below is selected.
-
- wYScale WORD Specifies the y-axis scaling
- factor.
-
- szJobName LPSTR Specifies the name of the print
- job. This string is used in
- the job name sent to the print
- spooler, as well as in the
- print dialog box.
-
- Return Value 0 if successful, or one of: ERR_DIBFUNCTION,
- ERR_INVALIDHANDLE, ERR_LOCK, ERR_SETABORTPROC,
- ERR_STARTDOC, ERR_NEWFRAME, ERR_ENDDOC, ERR_GETDC,
- ERR_STRETCHDIBITS. These constants are defined in
- errors.h.
-
- CopyWindowToDIB
- Syntax HDIB CopyWindowToDIB(hWnd, fPrintArea)
-
- This function copies the specified part of the window
- to a device-independent bitmap.
-
- Parameter Type/Description
- hWnd HWND Specifies the window.
-
- fPrintArea WORD Specifies the window area(s) to
- copy into the device-
- independent bitmap.
-
- Return Value The value returned identifies the device-
- independent bitmap if the function is successful.
- Otherwise, it is NULL.
-
-
- CopyScreenToDIB
- Syntax HDIB CopyScreenToDIB(lpRect)
-
- This function copies the specified part of the screen
- to a device-independent bitmap.
-
- Parameter Type/Description
- lpRect LPRECT Pointer to a RECT data
- structure that contains the
- rectangle to be copied.
-
- Return Value The value returned identifies the device-
- independent bitmap if the function is successful.
- Otherwise, it is NULL.
-
-
- CopyWindowToBitmap
- Syntax HBITMAP CopyWindowToBitmap(hWnd, fPrintArea)
-
- This function copies the specified part of the
- window to a device-dependent bitmap.
-
- Parameter Type/Description
- hWnd HWND Specifies the window.
-
- fPrintArea WORD Specifies the window area(s) to
- copy into the device-
- independent bitmap.
-
- Return Value The value returned identifies the device-
- dependent bitmap if the function is successful.
- Otherwise, it is NULL.
-
-
- CopyScreenToBitmap
- Syntax HBITMAP CopyScreenToBitmap(lpRect)
-
- This function copies the specified part of the screen
- to a device-dependent bitmap.
-
- Parameter Type/Description
- lpRect LPRECT Pointer to a RECT data
- structure that contains the
- rectangle to be copied.
-
- Return Value The value returned identifies the deice-
- dependent bitmap if the function is successful.
- Otherwise, it is NULL.
-
-
- PrintDIB
- Syntax WORD PrintDIB(hDib, fPrintOpt, wXScale, wYScale,
- szJobName)
-
- This function prints the specified DIB.
-
- Parameter Type/Description
- hDib HDIB Specifies the handle to a DIB
- which is to be printed
-
- fPrintOpt WORD Specifies the printing option.
-
- wXScale WORD Specifies the x-axis scaling
- factor for the printed window.
- The x and y scaling factors
- are only used if the PW_SCALE
- option is selected for the
- fPrintOpt parameter.
-
- wYScale WORD Specifies the y-axis scaling
- factor.
-
- szJobName LPSTR Specifies the name of the print
- job. This string is used in
- the job name sent to the print
- spooler, as well as in the
- print dialog box.
-
- Return Value 0 if successful, or one of: ERR_INVALIDHANDLE,
- ERR_LOCK, ERR_SETABORTPROC, ERR_STARTDOC,
- ERR_NEWFRAME, ERR_ENDDOC, ERR_GETDC,
- ERR_STRETCHDIBITS. These constants are defined in
- errors.h.
-
- SaveDIB
- Syntax WORD SaveDIB(hDib, lpFileName)
-
- This function saves the specified DIB to a disk file
- in Windows 3.0 DIB format. Although the convention
- for naming DIB files is to use a .BMP extension, the
- entire file name must be specified.
-
- Parameter Type/Description
- hDib HDIB Specifies the handle to a DIB
- which is to be saved.
-
- lpFileName LPSTR Specifies the complete path
- name of the DOS filename under
- which this DIB is to be saved.
-
- Return Value The value returned is zero for success or an
- error code of one of the following:
- ERR_INVALIDHANDLE, ERR_OPEN, or ERR_LOCK.
-
- LoadDIB
- Syntax HDIB LoadDIB(lpFileName)
-
- This function loads a DIB from the specified file,
- allocates memory for the DIB, and returns a handle to
- the DIB.
-
- Parameter Type/Description
- lpFileName LPSTR Specifies the complete path
- name of the DOS filename of
- the DIB to load. This
- function will load files with
- any extension, but the
- convention is to name DIB
- files with a .BMP etension.
-
- Return Value The value returned identifies the deice-
- dependent bitmap if the function is successful.
- Otherwise, it is NULL.
-
- DestroyDIB
- Syntax WORD DestroyDIB(hDib)
-
- This function destroys the specified DIB, deleting
- any memory associated with the DIB. The handle to
- the DIB is invalid after calling this function.
-
- Parameter Type/Description
- hDib HDIB Specifies the handle to the DIB
- to destroy.
-
- Return Value The value returned is zero for success.
-
-