C++ Win32 Capture Screen + Save PNG

This project was awarded to corecpp for $153 USD.

Get free quotes for a project like this
Employer working
Project Budget
$100 - $180 USD
Total Bids
Project Description

I need a C++ library called WindowGrab in the namespace "Fusion" created as a static Win32 library (.lib). This library will expose the WindowGrab class that will have a set of functions to capture a window and save it as a PNG file using libpng. The function won't actually save to disk but will save to a sqlite3 database.

Public functions

bool Init(sqlite3 *pDB); // Database that is already open. Your class should check for a WindowGrab table with the correct columns. If the correct table doesn't exist or the columns are wrong (possibly a wrong version) then wipe it and create the correct table. Same for WinThumbs.

bool SaveWindow(HWND hWnd, __int64 *pResultID, __int64 *pResultThumb); // Given a window handle, save a screen capture of the window as well as a 128x"y" thumbnail in the WinThumbs table. The resulting row (sqlite's internal ROWID value) is returned. The title of the window, class and location are also saved.

Notes: If the call is made within 5 seconds for the same window and no other windows are saved in the meantime, the same results are returned and no new capture is done.

void Dump(HANDLE hOutput, __int64 rowID, bool isThumb) // This will dump the image complete with HTTP headers (content type, content size, no cache header and image data).

void GetInfo(__int64 rowid, TCAPTUREINFO *pInfo) ; // Return a structure with all the info from a capture (title, date, time, etc)

## Deliverables

Visual Studio 2005 SLN which includes a small test and the library.

Looking to make some money?

  • Set your budget and the timeframe
  • Outline your proposal
  • Get paid for your work

Hire Freelancers who also bid on this project

    • Forbes
    • The New York Times
    • Time
    • Wall Street Journal
    • Times Online