Rogue Wave Views Foundation Classes
Rogue Wave Views Foundation Classes include the following code changes.
IlvColorMap
IlvIndexedBitmapData now uses
IlvColorMap The quantizers have been modularized and use
IlvColorMap.
IlvDisplay
The method IlvDisplay::getBitmap now has a second parameter. The prototype becomes:
IlvBitmap* getBitmap(const char* name, IlBoolean read = IlFalse) const;
When set to IlTrue, the read parameter indicates that if the bitmap has not been found in the internal display cache list, it must be read using the IlvDisplay::readBitmap method.
IlvPort
On Windows platforms, the IlvPort::drawTransformedString method has changed its behavior to work around a display bug. This may result in smaller strings being displayed. As a side effect, the IlvZoomableLabel objects, which use this method, may have their drawing changed the same way.
IlvBitmap
Since Views 5.0, on the Windows platform when the display depth is > 8, the IlvBitmap constructor that accepts an IlvBitmapData internally uses a DIBSection of the depth of the IlvBitmapData. This has the following consequences:
When using an
IlvIndexedBitmapData, the memory allocated is now one-fourth of the memory allocated in Rogue Wave Views 5.0.
The size and the number of created
IlvBitmap instances is limited only by the available system memory, whereas in previous Rogue Wave Views versions there was a limit given by the system (approx 48 Megabytes by
IlvBitmap and a limit of 192 Megabytes for all
IlvBitmap instances on Windows NT).
Performance is far better when using
IlvIndexedBitmapData since no conversion to true color is needed anymore.
The
IlvBitmap depth is no longer always equal to the display depth, so using a depth-8
IlvBitmap to draw into using Rogue Wave Views can give unexpected results since the colormap of the underlying DIBSection might not exactly match the colors used to draw.
IlvView
On Windows, the following methods are no longer taking the task bar into account:
IlvView::ensureInScreen IlvView::moveToScreen IlvWindowsDevice
The constructor of IlvWindowsDevice has an additional optional parameterof type IlvWindowsPrinterFactory.
IlvWindowsVirtualDevice
The return type of
IlvWindowsVirtualDevice::getHDC is now an HDC and no longer an
unsigned long.
The type of the parameter of
IlvWindowsVirtualDevice::setHDC is now an HDC and no longer an
unsigned long.
Typedef Changes
The typedef of IlvWindowProc has changed so that a port on Windows 64 bits will be possible later. It is now:
typedef IlBoolean (* IlvWindowProc)(IlvAbstractView* view,
IlvSystemView hWnd,
IlvMsgParam iMessage,
IlvWParam wParam,
IlvLParam lParam,
IlAny& returned,
IlAny userArg);
IlvMsgParam, IlvWParam, and IlvLParam are three new typedefs that are respectively equivalent to unsigned int, unsigned int, and long for Windows 32 bits. That means that a code written for the previous version of Rogue Wave Views still compiles and runs. However, the types will be different for Windows 64bits, and you should use the new types to be portable.
Note that the port on Windows64bits is not yet available, and even not precisely planned.
Version 6.2.1
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