Difference between revisions of "LMD VCL - LMD Packs"
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==NG Serialization== | ==NG Serialization== | ||
===How to serialize collections=== | ===How to serialize collections=== | ||
| − | + | Serializing collections, including custom or standard collections (like TList) requires writing custom converters. For example, lets consider the folowing collection declaration: | |
<pre class="brush:delphi"> | <pre class="brush:delphi"> | ||
| Line 39: | Line 39: | ||
X: Integer; | X: Integer; | ||
Y: Integer; | Y: Integer; | ||
| + | end; | ||
| + | |||
| + | TItems = class(TObjectList<TItem>); | ||
| + | </pre> | ||
| + | |||
| + | To be able to serialize it, we need to declare a converter class, and '''associate''' this class with our collection using Converter attribute: | ||
| + | |||
| + | <pre class="brush:delphi"> | ||
| + | type | ||
| + | TItemsConverter = class(TConverter) | ||
| + | public | ||
| + | function GetReadMode: TReadMode; override; | ||
| + | procedure Write(S: TSerializer; const V); override; | ||
| + | procedure Read(D: TDeserializer; var V); override; | ||
end; | end; | ||
[Converter(TItemsConverter)] | [Converter(TItemsConverter)] | ||
TItems = class(TObjectList<TItem>); | TItems = class(TObjectList<TItem>); | ||
| + | </pre> | ||
| + | |||
| + | The converter can be implemented like this: | ||
| + | |||
| + | <pre class="brush:delphi"> | ||
</pre> | </pre> | ||
Revision as of 12:32, 27 May 2015
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LMD ShellPack
Using Paste/Copy commands at runtime
Copy: <delphi> if assigned(LMDShellList1.selected) then LMDDoContextMenuVerb( LMDShellList1, (LMDShellList1.Selected as TLMDShellListItem).ShellItem, 'copy'); </delphi> Paste: <delphi> LMDDoContextMenuVerb( LMDShellList2, LMDShellFolder2.ActiveFolder,'paste'); </delphi>
LMD RichPack
Which MS RichEdit DLL Version can I expect on a specific operating system?
Please check list of different RichEdit versions.
Searching for specific attributes
Q: I was trying out the LMD RTF wrapper (using BCB 6) and wanted to know what would be the best way to search for words or characters with a specific attribute.
A:
- Use FindTextEx
- Check SelAttributes
if attrs not ok then FindTextEx again.
LMD WebPack
[Linker Error] Unresolved external "InternetCloseHandle" referenced from
Simply add wininet.lib to your project (file can be found in \lib directory of your C++ Builder / BDS / CRS installation). In recent IDEs you can also add
#pragma link "wininet.lib"
in your code.
NG Serialization
How to serialize collections
Serializing collections, including custom or standard collections (like TList) requires writing custom converters. For example, lets consider the folowing collection declaration:
type
TItem = class
public
X: Integer;
Y: Integer;
end;
TItems = class(TObjectList<TItem>);
To be able to serialize it, we need to declare a converter class, and associate this class with our collection using Converter attribute:
type
TItemsConverter = class(TConverter)
public
function GetReadMode: TReadMode; override;
procedure Write(S: TSerializer; const V); override;
procedure Read(D: TDeserializer; var V); override;
end;
[Converter(TItemsConverter)]
TItems = class(TObjectList<TItem>);
The converter can be implemented like this:
