dynamical DLL loading in delphi 7 & delphi 2010
Hello,
i am loading a DLL dynamical in Delphi 7 and Delphi 2010:
[delphi]
var
hDLL: THandle;
pCode: Pointer;
type
TProcMainEntry = function: TForm;
begin
hDll := 0;
if FileExists(Pfad + vpeDllName) then
hDLL := LoadLibrary(PChar(Pfad + vpeDllName))
else
SetLastError(2);
if hDLL = 0 then
RaiseLastOSError;
pCode := GetProcAddress(hDLL, PChar(vpeFunction));
if pCode = nil then
RaiseLastOSError;
Result := TProcMainEntry(pcode)();
[/delphi]
in delphi 7 there's a variable filled with data of the main application which used in the DLL.
In delphi 2010 this variable is NIL.
If i am looking in delphi 7, the stack-trace begins from the main application, but in delphi 2010 it begins only from the DLL self.
Is there anything changed in delphi 2010 with DLL handling between delphi 7? (maybe there is , but what I have to do to solve this)
greatings,
Andreas
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Andreas
9/9/2009 1:05:31 PM
embarcadero.delphi.nativeapi
1236 articles. 
1 followers.
4 Replies
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Andreas Thurm wrote: > Hello, > > i am loading a DLL dynamical in Delphi 7 and Delphi 2010: > > [delphi] > var > hDLL: THandle; > pCode: Pointer; > type > TProcMainEntry = function: TForm; You can't pass objects over module boundaries except if both sides are: - compiled with runtime packages - compiled with the same compiler/RTL version
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Thorsten
9/9/2009 3:57:35 PM
> {quote:title=Thorsten Engler wrote:}{quote}
> Andreas Thurm wrote:
>
> > Hello,
> >
> > i am loading a DLL dynamical in Delphi 7 and Delphi 2010:
> >
> > [delphi]
> > var
> > hDLL: THandle;
> > pCode: Pointer;
> > type
> > TProcMainEntry = function: TForm;
>
> You can't pass objects over module boundaries except if both sides are:
> - compiled with runtime packages
> - compiled with the same compiler/RTL version
don't understand.
the self project is on two maschines , one with Delphi 7 and one with Delphi 2010...
the DLL loading is successful, but in delphi 7 i have the global vars of the main application and in delphi 2010 not.
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Andreas
9/10/2009 6:17:36 AM
Andreas Thurm wrote: > > > TProcMainEntry = function: TForm; > > > > You can't pass objects over module boundaries except if both sides are: > > - compiled with runtime packages > > - compiled with the same compiler/RTL version > > don't understand. > the self project is on two maschines , one with Delphi 7 and one with Delphi > 2010... the DLL loading is successful, but in delphi 7 i have the global > vars of the main application and in delphi 2010 not. You are loading a DLL and then calling a function in that DLL which returns a TForm. No matter what other problems you may have, the above is only allowed if both your exe and the dll are compiled with the "use runtime packages" option active and are both compiled with exactly the same version of the delphi RTL/VCL and compiler.
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Thorsten
9/10/2009 6:28:37 AM
> No matter what other problems you may have, the above is only allowed if both > your exe and the dll are compiled with the "use runtime packages" option active > and are both compiled with exactly the same version of the delphi RTL/VCL and > compiler. that was it , sorry, dont understand you post before... but "Using runtime packages" in the options helped.
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Andreas
9/10/2009 6:38:57 AM
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Have been using Delphi 7 for many moons ( have got later versions but never upgraded to ) My first problem is: Component Palette. in XE it is a small toolbar docked in top right in Delphi 7 it gives a large view of all the components. I am struggling to be able to cope/access my components.in Delphi XE. Can I make the component pallette tool bar the same size as Delphi 7, or is there a fast way to view/choose all available components in XE, that I have not spotted yet? Kind Regards, Robert. Hi, What I know is that in Delphi 2010 and XE you can choose between t...
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Hi. It is possible, with component RX, dxforumlibrary, InfoPower3000Pro, StringAlignGrid. Accepts communication BDE. Thank by comments. excequiel arostica wrote: >Hi. > It is possible, with component RX, dxforumlibrary, >InfoPower3000Pro, StringAlignGrid. Accepts communication BDE. > >Thank by comments. Rx is dead and sources are taken over by jcl/jvcl. I dont know about the rest of the components and i have no experiences with bde over the last 9 years. excequiel arostica wrote: > Hi. > It is possible, with component RX, dxforumlibrary,...
How to access Delphi 7 & 2009 after purchasing Delphi XE
I have purchased and installed Delphi XE and now I'm unable to find information on how to download previous versions of Delphi, namely Delphi 7 and 2009. Please respond. Regards, SB, L&T Hi sushweta biswas, > I have purchased and installed Delphi XE and now I'm unable to find information on how to download previous versions of Delphi, namely Delphi 7 and 2009. Your reseller should have told you: after registering Delphi XE, you can go to http://www.embarcadero.com/xe-earlier-versions to enter your serial number of Delphi XE as well as your EDN account informati...
Delphi 7 versus Delphi 2010 compiler directive {$Q-}
Hi, Could it be correct that there's a bug in Delphi7 where the compiler directive {$Q-} and {$Q+} works completely the opposite? When trying to build an existing Delhi 7 project in Delphi 2010 i found this weird behaviour. In D7 {$Q-} set overflow cheking on and in Delphi 2010 off ????? Regards, Arno Brinkman ABVisie -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Firebird open source database with many powerful SQL features: http://www.firebirdsql.org http://www.firebirdsql.info General database developer support: http://www.databasedevelopmentforum.com Support list for Interbase and Firebird users: firebird-support@yahoogroups.com Nederlandse firebird nieuwsgroep: news://newsgroups.firebirdsql.info Arno Brinkman wrote: > Could it be correct that there's a bug in Delphi7 where the compiler > directive {$Q-} and {$Q+} works completely the opposite? Assuming D7 build 8.1, not very likely. > When trying to build an existing Delhi 7 project in Delphi 2010 i > found this weird behaviour. In D7 {$Q-} set overflow cheking on and > in Delphi 2010 off ????? Could it be that you use include files where overflow checking is turned on/off based on VERxxx defines and that you did not include the VER210 yet? -- Pieter 'That seems to point up a significant difference between Europeans and Americans. A European says: "I can't understand this, what's wrong with me?" An American says: &qu...
Cannot load Midas.dll
Neither the Delphi 2010 IDE, nor software compiled using ClientataSet will load midas.dll The problem is solved by using midaslib for the software, but can't solve the IDE problem, particularly setting up master/detail information in ClientDataset. It doesn't seem to matter whether midas.dll is registered or not. The version I'm using is 7.0.4.453 Neville Richards It does matter. I had this problem after I uninstalled a trial. Midas.dll was still registered with the trial location and not present at this location. What if you try: tregsvr midas.dll On 09/11/20...
Delphi 2010 Help Update and Delphi Updates 4 & 5
I installed Delphi 2010 Update 4 a few weeks ago. Is there a help update that corresponds with Delphi 2010 Update 4? If not where can I find the latest help update. How do I update help? > {quote:title=Bill Miller wrote:}{quote} > I installed Delphi 2010 Update 4 a few weeks ago. Is there a help update > that corresponds with Delphi 2010 Update 4? If not where can I find the > latest help update. How do I update help? The last help update for Delphi/C++ Builder 2010 was Help Update 1, released around the first of November 2009. It's available on the Embarcad...
.EXE is almost twice a big in Delphi 2010 compared to Delphi 7?
While migrating from Delphi 7, I have a program whose .exe is about 18 megs in Delphi 7, but in Delphi 2010, it's about 35 megs. Is this in line with what others have seen, or am I missing some switch? I'm configuring the "Release" Build Configuration. And I'm right-clicking on "Release" in the Project Manager and selecting Build. I haven't been able to find any addition project options to bring this number down: Current Configuration: Emit RTTI: False Debug info: False Map file: Off Include Remote debug symbols: {$WEAKLINKRTTI ON} ...
Delphi and Delphi for .Net
It seems that Delphi for .Net is slower than Delphi Win32 native applicaiton. I would like to know is it true all .Net application is slower than Win32 native applicaiton or it is Delphi for .Net only. Your information is great appreciated, Inung On 2011-06-21 18:20:17 +0100, Inung Huang said: > It seems that Delphi for .Net is slower than Delphi Win32 native applicaiton. > I would like to know is it true all .Net application is slower than > Win32 native applicaiton or it is Delphi for .Net only. If you are only running the code in the application once then, yes, yo...
Price of upgrade from Delphi 2010 Professional to Delphi 2010 Enterprise?
It's weird, but I could not find the answer on so simple question not in Embarcadero Shop, neither by the forum search. For example, the shop info about Enterprise upgrade says: The Upgrade product is available to registered owners of 2006-2009 versions, blah-blah... So, if I'm Delphi 2010 Professional user, I even not eligible for upgrade? I have to buy a new version of Enterprise??? But if I'm Delphi 2006 Professional user, I can upgrade. Please clarify this nonsense for me. Exact question is in the subject. Thanks! Hi Dmitri, > It's weird, but I could not...
Delphi 7 to Delphi 2009 conversion
Hello group, What do I need to do to comile the following code in D2009. Compiler error after the Else E2010: Incompatible Types 'AnsiChar' and 'Char' if isUnicode then SearchHandle := FindFirstFilew( PWideChar( fn ), FindDataW ) else SearchHandle := FindFirstFile( PAnsiChar( Ansistring( fn ) ), FindDataA ); <<<<<compiler error in the above line >>>>>>>>>>> Regards, Bryan > What do I need to do to comile the following code in D2009. > Compiler error after the Else > E2010: Incompati...
delphi 2006 code in delphi 2010
hello, is there any option to make delphi 2006 code work in delphi 2010? something like in java IDEs where you can define the code level you like to use? the problem is, that i made a project with 2006 and sent it to my customer. they got 2010 and it compiles fine, but it just doesn't work. it deals with en-/decryption of text, we assumed, that it has something to do with ansi vs. unicode strings... but we cant find the exact position where the error occurs. i am a bit dissapointed, because everywhere i read that the new IDE will always be downwards compatible and so on.. but in ...
Migrating from Delphi 7 to Delphi XE3
Hello, Its time to leave the old Delphi 7 and move to the new (but not the latest) XE3. I was wondering if there is a good book or reference to learn all new things XE3 added. Any suggestions? On 5/3/2013 10:17 PM, George Karatsiolis wrote: > Hello, Its time to leave the old Delphi 7 and move to the new (but not the latest) XE3. > I was wondering if there is a good book or reference to learn all new things XE3 added. Try this one for starters: http://tinyurl.com/cgsu243 Aside from that you really need to evaluate your application. XE3 is Unicode for example.... So her...
Web resources about - dynamical DLL loading in delphi 7 & delphi 2010 - embarcadero.delphi.nativeapi
A Dynamical Theory of the Electromagnetic Field - Wikipedia, the free encyclopediaIt is the paper in which the original set of four Maxwell's equations first appeared. The concept of displacement current , which he had introduced ...
Dynamical constraints on the mass and perihelion distance of Nemesis and the stability of its orbit
J. G. Hills T-6, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA It has been suggested that the observed ...
J. G. Hills T-6, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA It has been suggested that the observed ...
A dynamical quantum simulator(PhysOrg.com) An international collaboration demonstrates the superiority of a dynamical quantum simulator over state-of-the-art numerical calculations. ...
Clarification of dynamical process of aluminum surface oxidation
Researchers have solved a 20 year old riddle concerning the reaction mechanism of aluminum surface oxidation.
Researchers have solved a 20 year old riddle concerning the reaction mechanism of aluminum surface oxidation.
First Observation of the Dynamical Casimir Effect - MIT Technology ReviewA rapidly moving mirror that turns virtual photons into real ones is the first experimental evidence of the dynamical Casimir effect.
The dynamical theory of gases [microform]
Internet Archive BookReader - The dynamical theory of gases [microform]
Internet Archive BookReader - The dynamical theory of gases [microform]
Selection of a desired dynamical behaviorMulti-stability, or coexistence of multiple behaviors, is a universal phenomenon found in almost all areas of science in nature, from lasers ...
A Dynamical-Systems View of Stem Cell Biology
During development, cells undergo a unidirectional course of differentiation that progressively decreases the number of cell types they can potentially ...
During development, cells undergo a unidirectional course of differentiation that progressively decreases the number of cell types they can potentially ...
Dynamical system - Wikipedia, the free encyclopediaThis article is about the general aspects of dynamical systems. For technical details, see Dynamical system (definition) . For the study, see ...
Causal dynamical triangulation - Wikipedia, the free encyclopediaCausal dynamical triangulation (abbreviated as CDT ) invented by Renate Loll , Jan Ambjørn and Jerzy Jurkiewicz , and popularized by Fotini Markopoulou ...
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