|
capControlCallback
The capControlCallback function is the callback function used for precision control to begin and end
streaming capture. The capControlCallback callback function is a placeholder for the application-supplied function name.
LRESULT CALLBACK capControlCallback(
Parameters
hWnd
Handle of the capture window associated with the callback function.
nState
Current state of the capture operation. The CONTROLCALLBACK_PREROLL value is
sent initially to enable prerolling of the video sources and to return control
to the capture application at the exact moment recording is to begin. The
CONTROLCALLBACK_CAPTURING value is sent once per captured frame to indicate that
streaming capture is in progress and to enable the application to end capture.
Return Values
When nState is set to CONTROLCALLBACK_PREROLL, this callback function must return TRUE to
start capture or FALSE to abort it. When nState is set to CONTROLCALLBACK_CAPTURING, this callback function must return TRUE
to continue capture or FALSE to end it.
Remarks
The first message sent to the callback procedure sets the nState parameter to CONTROLCALLBACK_PREROLL after allocating all buffers and all
other capture preparations are complete.
| Last news from Greatis Software |
 |
|
Nostalgia .Net |
|
.Net is powerful, but not all-powerful, so sometimes we need to use Win32 API for our .Net applications. It's simple enough with Platform Invoke if you have Win32 skill, but we do not always have time to dig the ancient documentation, declare the special types that are compatible with Win32, find the values of the Win32's constants and so on. Nostalgia .Net offers several simple-to-use classes, and components that will allow you to forget about the headache of Win32 and just use the power of Win32 in your application the same way as you use the native. Net classes. More » |
| Recommended software for developers |
 |
|
Ultimate Pack |
|
Component pack for Delphi and C++ Builder that contains runtime form designer, runtime object inspector, print suite and much more for the very special price. More » |
 |
|
Form Designer .Net |
|
Unique runtime form design solution that allows to edit any form in .Net WinForms application at runtime with full source codes for only 300 euro! More » |
 |
|
Print Suite .Net |
|
Print Suite .Net is a set of components for easy printing texts, images and grids from your WinForms applications. Full C# source codes are available More » |
 |
|
Gradient Controls .Net |
|
Gradient Controls .Net offers controls with gradient background feature. Labels, panels and so on... Full C# source codes are available More » |
 |
|
Greatis iGrid |
|
iGrid plots drawing grid right over your desktop, so you can use it everywhere, with any drawing application without any special plugins for different graphic editors. More » |
All the contacts and projectsDmitry Vasiliev (just.dmitry)
Related LinksSoftware for Visual Studio .NET developers
Software for Delphi and C++ Builder developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET More Online Helps Win32 Programmer's Reference
Win32 Multimedia Programmer's Reference
OLE Programmer's Reference
Microsoft Windows Pen API Programmer's Reference
Microsoft Windows Sockets 2 Reference
Microsoft Windows Telephony API (TAPI) Programmer's Reference
Unix Manual Pages
|
