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PgSetup.txt
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TdfsPageSetupDialog v2.14
Description:
A component to wrap the PageSetupDlg API function that Borland forgot.
It is a common dialog available on the Win95 platform, so it can not be
used with Delphi 1.0.
Contact Information:
The lateset version will always be available on the web at:
http://www.delphifreestuff.com
If you have any questions, comments or suggestions, please use the Delphi
Free Stuff Support Forum at:
http://www.delphifreestuff.com/discus/
If, for some reason, you can not use the web-based support forum, you can
email me at bstowers@delphifreestuff.com. However, the support forum will
always take precedence over direct email since it provides a resource that
others can use when they have a problem. Every message posted to the forum
is emailed directly to this account, so emailing me directly will not get
your message to me any faster. It will only make the message less important
for me to respond to since only one person (you) is benefiting from it
instead of everyone interested. Having said all that, please do email me
directly if it is regarding something that isn't really support related,
i.e. just to say thanks (as novel as that idea is).
Installation:
Delphi 1:
* This component is not compatible with Delphi 1.
Delphi 2, C++Builder 1:
* Select the 'Component | Install' menu item.
* In the Install Components dialog, click the Add button.
* In the Add Module dialog, enter the full path name of the component's
registration unit (the unit that ends with 'Reg.pas', i.e.
'BrowseDrReg.pas') and click OK.
* In the Add Module dialog, click OK.
* The component library will be rebuilt and a new tab named 'DFS' will be
available on the Component Palette.
Delphi 3, 4, 5, C++Builder 3 & 4:
* Do one of the following:
+ Create a new package by selecting File | New and choosing Package from
the New tab in the dialog.
+ Open an existing package file. I suggest you do this if you already
have a package that you like to use for small, third party components.
I specifically have a package named "3rdParty.dpk" that I use for
small components that come from other people. Or, if you are using
several of my components, you might create a "DFS.dpk" package and
use it for all of my DFS components.
* In the resulting package window, click the Add button.
* In the Add dialog, on the Add Unit tab, enter the full path name of the
component's registration unit (the unit that ends with 'Reg.pas', i.e.
'BrowseDrReg.pas') and click OK.
* You may want to add the other source files (*.pas) to the package as
well in the same manner as you did the registration unit. While this is
not required, not doing it will cause compiler warnings when the package
is compiled. The component will function fine either way, but I
personally find the warnings very irritating and am not happy until
every compiler warning and hint is gone.
* If this package is new, or it has never been installed, click the
Install button in the package window. If this package is already
installed in Delphi, click the Compile button.
C++Builder 5 and up:
* Perform the "Delphi 3 and up, C++Builder 3 and up" steps above, except
for the last step (Compile or Install).
* Select the package the component has been added to, and choose
Project | Edit Option Source to open the package options in the editor.
* In the entry for PFLAGS, add the "-LUvcl50" option. For example:
<PFLAGS value="-$YD -$W -$O -v -JPHNE -M -LUvcl50"/>
* Perform the final step from above, Compile or Install.
* For Borland's official word on this situation, open the C++Builder help
file and search the index for "dsgnintf.dcu" and see the "Compiling
packages with DsgnIntf" section.
Delphi 6 and up:
* Perform the "Delphi 3, 4, 5, C++Builder 3 & 4" steps above, except
for the last step (Compile or Install).
* Add the DesignIDE package to the Requires list of the package into which
the component is being installed.
* Perform the final step from above, Compile or Install.
* This is necessary because of changes to the design-time support units
introduced in Delphi 6. For complete information, see the Del6New.hlp
file in your Delphi 6 Help directory. In the index, search for
"upgrade issues" and in the resulting list of topics, select the
"DsgnIntf renamed and related changes" topic.
Known Issues:
* There appears to be a bug in the PageSetupDlg Win32 API function. If the
PSD_INHUNDREDTHSOFMILLIMETERS flag is used, default minimum margins aren't
enforced by the dialog. If PSD_INTHOUSANDTHSOFINCHES is used, they are
enforced. The reason I think it is an API bug is that Notepad exhibits the
exact same behavior. Try this: Run Notepad with the U.S. measurement
system and the Metric system. You'll notice under U.S. that when you go
into the page setup dialog of Notepad, it will default to your printer's
minimum margins if you enter a value of 0 for any of the margins. Under
metric, you'll notice that entering a value of 0 will be accepted. You
can change the measurement system you are currently using by going into
the Regional Settings Control Panel and chaning the Measurement System
on the Number tab.
Note that this only affects the dialog when poDefaultMinMargins is set in
the Options property. If this flag is not set, the values in the
MinimumMargins property will be used and enforced by the dialog. So,
a possible work-around for this problem might be to simply leave out the
poDefaultMinMargins flag. This would result in the default minimum
margins being read by the component at start up, and then used by the
dialog as hard-coded values that it will enforce. I have not tried this,
but it seems like it should work.
* Long delays when using the component: It is possible that using this
component can cause long delays at certain points in your app (when creating
a form that has the component on it). This is caused by "WinPrinters". For
those who don't know, many manufacturers are now selling what are known as
WinPrinters. These operate on the same principle as WinModems (what used to
be called RPI modems): Move some/most/all of the brains out of the printer
and put it in the software driver. This has some benefits, upgrades via
software instead of hardware being the most compelling, but the tradeoff is
that using the device places a much greater burden on your system since it
now has to do work that the printer itself used to do. Usually, on less
than state-of-the-art machines or with really stupid WinPrinters, this means
other software's performance suffers when the printer is being used. I've
tried to minimize the impact in the component by only talking to the printer
when I have to, but you still may see delays. The best suggestion I have at
the moment is to always make sure that the printer involved has the most
current drivers available installed for it. I have seen this issue resolved
in at least one case by using an updated driver.
Revision History:
2.14 + Updated for Delphi 6 compatibility. See updated install directions
above.
2.13 + Updated for C++Builder 5 compatibility.
2.12 + Make the PaperSizeType property read/write, not just read. This is
useful for setting the paper size type before showing the dialog.
Also, it's the only way to set the paper size as changing the PaperSize
property seems to have no effect on the dialog. For a description of
valid values used with the property, look up "DEVMODE" in the Win32 SDK
help file. Things like DMPAPER_LETTER and DMPAPER_LEGAL.
2.11 + Reworked when the default property values are retrieved from the
system. See Known Issues section above.
2.10 + It's *really* D5 compatible now. Small change between the D5 eval
version and the real, shipping D5 version broke it.
2.09 + Fixed nasty little problem with HInstance not being set correctly in
the DoExecute method. Many thanks to Andreas Hoerstemeier for
catching this.
2.08 + Classname changed.
+ D5 compatibility.
2.07 + Updated for C++Builder 4 compatibility.
2.06 + Component will now check to see if there are any printers installed
before trying to call the PageSetupDlg API function. Before, if there
wasn't a printer installed, you'd get error messages to that effect by
simply running a program with the component installed. Now, the error
message won't be displayed until the user actually tries to bring up
the dialog.
2.05 + PaperSizeType public property. This will return the paper type of the
currently selected printer. Constants for these values are defined in
Windows.pas, and are documented in the Win32.hlp file under the
"DEVMODE" topic, dmPaperSize member. A common use for this is to
determine if the user has selected the user-defined paper size value
(DMPAPER_USER constant), thus indicating that you need to get the
size desired from the user.
+ Demo app updated a bit for better rich edit stuff. Thanks to
Christopher Sansone for doing this.
2.04 + Added PgSetupReg unit. All IDE specific code (i.e. registering the
component, property editors, etc.) are contained in this unit. This
was done for two primary reasons: 1) Using the component in a Delphi
or C++Builder expert would register the component as well. 2) Reduce
code size in some cases -- usually the smart linker removes this sort
of stuff since the app never references it, but now it's for certain
since it isn't even in the unit. This change means that you need to
install the component using the new "registration" unit instead of
the unit containing the component.
2.03: + Seriously nasty bugs that wouldn't update properties like PageSize
after the user made a selection. Fixed.
+ Updated demo project to work with either inches or millimeters.
+ Updated Known Issues above.
2.02: + PageSize, Margins, MinimumMargins didn't seem to get the system
default values if the Measurements property was pmDefault. I've
reworked the whole thing and it seems to work as it should now.
+ Changing Measurements property would not update custom values of the
PageSize, Margins, and MinimumMargins properties. They would only
update if they contained the system defaults. Fixed.
+ Forgot to include the updated demo in the distribution archive. Old
demo wouldn't compile...
2.01: + Added Version property.
2.00: + MinimumMargins weren't being enforced. Default minimums were always
being used. That should only happen if poDefaultMinMargins is set in
Options. Fixed.
+ PageSize, Margins, and MinimumMargins are all now published instead of
public. They initially have the default values of the system, and if
you do not change them, they will continue to get the default values
of the system the application is run on. That is, if your printer has
a default margin setting of 1000, 1000, 1000, 1000, but one of your
user's has a printer that has 750, 750, 750, 750, the component will
show your settings at design time, but use the system's defaults that
it is being run on. However, if you change the values, they are then
stored in your DFM file and used on everyone's system. If you change
the values and they are thus stored this way and you change your mind,
you can get it to revert back to the system defaults by editing your
form file (right click on it and select View As Text) and removing the
entries for that property entirely.
+ PageSize, Margins, and MinimumMargins now contain the system defaults
when initially created. This is done by calling ReadCurrentValues in
the constructor, therefor you will rarely need to call this method
yourself.
+ The following enhancements were suggested by Indridi Bjornsson
<indridi@isholf.is> and based on code sent by him. Many thanks.
+ New DefaultMeasurements read-only property that indicates how the
current system likes to measure things (inches or millimeters) and an
associated CurrentMeasurements property that translates pmDefault into
the system value so you get only a pmInches or pmMillimeters value.
+ Measurements property has a new default value, pmDefault. If set to
this, the value of DefaultMeasurments will be used in order to use the
preferences set on the current system.
+ Added two new methods, FromMeasurementVal and ToMeasurementVal to
convert a value such as Margins.Top to a double value and vice versa
based on current measurement type. For example, if the paper size is
8 1/2 inches and pmInches is the current measurement system, PageSize.X
would have a value of 8500. FromMeasurementVal would convert that to
8.5.
1.10: + Added ReadCurrentValues method so the properties can be populated from
the system and can be read without actually displaying the dialog.
1.04: + New property: Centered. I bet you can guess what it's for.
+ Fixed problem with C++Builder 3 run-time packages.
1.03: + Updated for new DFS.INC file, component tab name, history/comments
file.
1.02: + Updated to for compatibility with Delphi 3.
1.01: + Added "property editor" to allow testing the dialog at design-time.
Just right click on it and select 'Test Dialog' from the menu.
1.00: + Initial release.