ROTATING KNOB (gauge)

[Patrice Terrier]

WinLIFT allows you to create rotating knobs.

The Gauge project, included in the ZIP file attached to the first post of the main WinLIFT thread, shows you the inter-action between several knob gauges.

Here is the declaration of skKnobGauge API:

Code Select Expand

' // 4.76 Create a Knob gauge control.
 DECLARE FUNCTION skKnobGauge LIB "WinLIFT.dll" ALIAS "skKnobGauge" ( _
 BYVAL hOwner AS LONG, _            ' Handle of the window parent owner.
 zFullpathImageName AS ASCIIZ, _    ' Full path name to the gauge image.
 BYVAL x AS LONG, _                 ' X location of the gauge control.
 BYVAL y AS LONG, _                 ' Y location of the gauge control.
 BYVAL W AS LONG, _                 ' Width of the gauge control.
 BYVAL H AS LONG, _                 ' Height of the gauge control.
 BYVAL ButID AS LONG, _             ' Unique ID of the gauge control.
 BYVAL MinValue AS LONG, _          ' MAXIMUM range value (the exclusion zone is between the MINIMUM and MAXIMUM range).
 BYVAL MaxValue AS LONG, _          ' MAXIMUM range value (the exclusion zone is between the MINIMUM and MAXIMUM range).
 BYVAL UsePos AS LONG, _            ' 0 or initial angle value in degree to use.
 BYVAL StateMax AS LONG _           ' 0 or 2
 ) AS LONG

'// 4.76 Assign the Min/Max gauge value.
 DECLARE SUB skGaugeSetMinMax LIB "WinLIFT.dll" ALIAS "skGaugeSetMinMax" ( _
 BYVAL hCtrl AS LONG, _             ' The control handle.
 BYVAL nMin AS LONG, _              ' Minimum value (for knob this must be a rotation angle in the range 0-359).
 BYVAL nMax AS LONG _               ' Maximum value (for knob this must be a rotation angle in the range 0-359).
 )

'// 4.76 Retrieve the Min/Max gauge value.
 DECLARE SUB skGaugeGetMinMax LIB "WinLIFT.dll" ALIAS "skGaugeGetMinMax" ( _
 BYVAL hCtrl AS LONG, _             ' The control handle.
 BYREF nMin AS LONG, _              ' Minimum value (for knob this is a rotation angle in the range 0-359).
 BYREF nMax AS LONG _               ' Maximum value (for knob this is a rotation angle in the range 0-359).
 )

'// 4.76 Set the gauge value.
 DECLARE SUB skGaugeSetPos LIB "WinLIFT.dll" ALIAS "skGaugeSetPos" ( _
 BYVAL hCtrl AS LONG, _             ' The control handle.
 BYVAL nPos AS LONG, _              ' The pos value to set (must be an angle in the range 0-359 for Knob control).
 BYVAL RedrawFlag AS LONG _         ' Redraw boolean flag.
 )

'// 4.76 Get the gauge value.
 DECLARE FUNCTION skGaugeGetPos LIB "WinLIFT.dll" ALIAS "skGaugeGetPos" ( _
 BYVAL hCtrl AS LONG _              ' The control handle.
 ) AS LONG



Screen shot:



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[Patrice Terrier]

The GDImage graphic library has a new API to use the WinLIFT background in composited mode.

The declaration of the new ZI_UseWinLIFTbackground API is:

Code Select Expand

'// 5.15 Enable/Disable drawing of the WinLIFT skin background in the specified GDImage graphic control.
 DECLARE SUB ZI_UseWinLIFTbackground LIB "GDIMAGE.DLL" ALIAS "ZI_UseWinLIFTbackground" ( _
 BYVAL hGDImageCtrl AS LONG, _ ' The GDimage control handle.
 BYVAL TrueOrFalse AS LONG, _  ' The enable/disable boolean value to use.
 BYVAL RedrawParent AS LONG _  ' TRUE causes immediate redraw of the object parent.
 )


The Gauge project (in the ZIP file attached to the first post of the main WinLIFT thread) has been updated with a new CheckBox, to enable/disable the drawing of the background behind the GDImage graphic control (composited mode).

Screen shot:


I have kept the thin border drawn around the graphic control to let you see the frontier between WinLIFT and GDImage.

ZI_UseWinLIFTbackground allows you to mix "standard" controls and WinLIFT widgets (like in the dashboard project) to create amazing interface for touch screen applications or graphic instrument panel.

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