|
Editing or Copying Pen Data
The functions listed below add, delete, or copy coordinate data to and from an HPENDATA object.
An empty HPENDATA object has the following value for the wPndts member of its PENDATAHEADER structure:
PDTS_NOUPPOINTS | PDTS_NOCOLLINEAR | PDTS_NOEMPTYSTROKES
For a full list of PDTS_ values, see Chapter 13, "Pen Application Programming
Interface Constants." See Chapter 11 for a description of PENDATAHEADER.
Functions in the following list with a name prefix of Add, Insert, Extract, or Remove add to or delete from an HPENDATA object. These functions check the results of their operation and adjust the
value in wPndts accordingly.
Function
| Description
| AddPenDataHRC
| Copies the pen data from an HPENDATA object to an HRC object. This function provides the means for deferred recognition. An
application can gather pen data into an HPENDATA block, manipulate or store it if desired, then later copy the data to an HRC object for recognition.
| AddPointsPenData
| Appends a set of points, including a STROKEINFO structure and any corresponding OEM data, to an HPENDATA object.
| ExtractPenDataPoints
| Copies points and OEM data from an HPENDATA block to supplied buffers. The application can convert the points to screen
resolution with the TPtoDP function to reduce the buffer size. The application can also optionally
delete these points from the original pen data.
| ExtractPenDataStrokes
| Copies selected strokes from an HPENDATA block, optionally creating a new HPENDATA block containing the copied strokes. ExtractPenDataStrokes can optionally delete the original strokes.
| GetPointsFromPenData
| Retrieves information from an HPENDATA object in a way similar to the GetPenDataStroke function. However, GetPointsFromPenData copies the required data to buffers supplied by the application rather than
simply returning pointers to the original data in the global heap. Therefore,
the application need not call BeginEnumStrokes and/or EndEnumStrokes when using GetPointsFromPenData.
| InsertPenData
| Merges two separate HPENDATA objects into a single object.
| InsertPenDataPoints
| Inserts points into the stroke of an existing HPENDATA object. InsertPenDataPoints automatically updates the stroke and pen data headers.
This function can adversely affect recognition accuracy for data that must
later be recognized.
| InsertPenDataStroke
| Inserts an entire stroke into an existing HPENDATA object. InsertPenDataStroke automatically updates the stroke and pen data headers. The ink of the
inserted stroke has default color and width. To change these attributes, call SetStrokeAttributes after inserting the stroke.
| PenDataToBuffer
PenDataFromBuffer
| Copy an HPENDATA object as sequential data from and to a buffer. PenDataFromBuffer creates and loads an HPENDATA object with the data from the sequential buffer created by PenDataToBuffer. These functions are used to transfer pen data to and from a file or the
clipboard.
| RemovePenDataStrokes
| Deletes a contiguous set of strokes from an HPENDATA object.
|
| 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
|
