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Print Screen FCN in Borland C++ Builder

Posted on 1998-06-15
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Last Modified: 2012-08-14
My users requested a screen print function in the Application that I created for them.  How can
I implement this??
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Question by:cwilliso
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chensu earned 100 total points
ID: 1165972
If you want to print your own window:

1. Use PrintDlg function to display a Print dialog box and get the DC of the selected printer.
2. Send the WM_PRINT or WM_PRINTCLIENT messages with the printer DC to your window.


If you want to print the full screen:

Check out the Win32 SDK sample "Wincap32: Window Screen Capture". The Wincap32 sample captures portions of the screen, specific windows, or the entire screen and saves it to a file or prints it. The sample uses DIB functions to do most of the capturing, printing, and saving.

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by:cwilliso
ID: 1165973
any sample code??  It could be any application -- It would all be the same code to
print out the application's client area.  I don't have much time, unfortunately.
Can't find a Property or Method to get the DC of the printer.  How to send a WM_PRINT
message to the main application window?
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LVL 23

Expert Comment

by:chensu
ID: 1165974
>Can't find a Property or Method to get the DC of the printer.

Look into the Win32 SDK sample "Printer: Printing". The Printer sample shows how to print using both the CreateDC and the PrinterDlg methods for acquiring a printer HDC.

>How to send a WM_PRINT message to the main application window?

It is just like a normal message. Use PostMessage or SendMessage with the window handle, HDC and the flags.
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Author Comment

by:cwilliso
ID: 1165975
The actual answer is:

this->Print();
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LVL 23

Expert Comment

by:chensu
ID: 1165976
I am not familiar with Borland C++ Builder. But I am sure this->Print() actually sends the WM_PRINT message. MFC also has a member function CWnd::Print, which wraps the WM_PRINT message.
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