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All ActiveX interfaces include a PEactions property. This
feature allows calling ProEssentials DLL calls via a property based interface
when and if it's desired. The
most important thing to remember about PEactions is that it's used to
undo the zoom state, and reinitialize the chart after setting properties,
PEactions = UNDO_ZOOM '(19) Undo Zoom
PEactions = REINITIALIZE_RESETIMAGE '(0) Calls
PEreinitialize,
PEresetimage,
Using PEactions to call DLL functions is optional and VB has means of
calling the ProEssentials DLL directly. The OCX interface also has methods
for most the ProEssentials DLL calls.
Related to PEactions are PEnarg1,
PEnarg2, and PEstrarg1
which provide for function arguments where needed. For those PEactions
that call ProEssentials functions requiring arguments, use:
PEnarg1 to set the width argument
PEnarg2 to set the height argument
PEstrarg1 to set the path\filename argument
*Note: Be sure to initialize these argument type properties before setting
the PEactions property.
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Setting |
Description |
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PEactions =REINITIALIZE_RESETIMAGE(0) |
Calls PEreinitialize,
PEresetimage, and InvalidateRect Set this
anytime an object's properties are manipulated and you want to immediately
see your changes. This is usually the last property you set. |
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REINITIALIZE(1) |
Calls PEreinitialize
Set this anytime you want to initialize an object without rebuilding the
image. This is useful to let ProEssentials determine the range of axes
and then you can look at (for example) ManualMinY and ManualMaxY to learn
the axis extents and add annotations or do other processing related to
these extents. |
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RESET_IMAGE(2) |
Calls PEresetimage
Set this anytime you want to only update the image. Do this after changing
XData or YData and the axes won't need to be re-scaled. This action is
commonly used in the sequence: PEactions = REINITIALIZE_QUICK(17), PEactions
= RESET_IMAGE(2) PEactions = INVALIDATE_RECT(3) |
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INVALIDATE_RECT(3) |
Calls the Windows InvalidateRect function
to cause a redraw. Generally called after a PEactions = RESET_IMAGE(2). |
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LAUNCH_MAXIMIZE(4) |
Calls PElaunchmaximize
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LAUNCH_CUSTOMIZE_DIALOG(5) |
Calls PElaunchcustomize
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LAUNCH_EXPORT_DIALOG(6) |
Calls PElaunchexport
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LAUNCH_TEXT_EXPORT_DIALOG(7) |
Calls PElaunchtextexport,
use PEnarg1 to represent bToFile 0=false, 1=true |
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LAUNCH_PRINT_DIALOG(8) |
Calls PElaunchprintdialog
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LAUNCH_POPUP_MENU(11) |
Calls PElaunchpopupmenu |
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COPY_META_TO_CLIPBOARD(12) |
Calls PEcopymetatoclipboard
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COPY_META_TO_FILE(13) |
Calls PEcopymetatofile
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COPY_BMP_TO_CLIPBOARD(14) |
Calls PEcopybitmaptoclipboard |
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COPY_BMP_TO_FILE(15) |
Calls PEcopybitmaptofile
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REINITIALIZE_QUICK(17) |
Calls PEreinitializecustoms |
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PRINT_GRAPH(18) |
Calls PEprintgraph
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UNDO_ZOOM(19) |
Undo Zoom |
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REVERT_TO_DEFAULTS(20) |
Calls PEreset |
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COPY_PNG_TO_FILE(22) |
Calls PEcopyjpegtofile
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COPY_PNG_TO_CLIPBOARD(23) |
Calls PEcopypngtoclipboard |
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COPY_PNG_TO_FILE(24) |
Calls PEcopypngtofile |
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