UserLib
Übersicht BlitzBasic Allgemein
tftBetreff: UserLib |
Mi, Dez 24, 2003 9:23 Antworten mit Zitat |
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Hi.....
da das Alte UserLib Forum Nicht mer existiert. Hir die Master Frage. Wie war das nochmal mit dem einbinden von DLL in BB3D. Dringend....Danke |
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TFT
https://www.sourcemagic.ch Monkey,HTML5,CSS3,W 10 64 Bit, 32 GB Ram, GTX Titan, W8 ist Müll !!!!!! |
CodeMaster |
Mi, Dez 24, 2003 11:26 Antworten mit Zitat |
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Boah, bin ich ein Spammer - guckst du hier: https://www.blitzforum.de/viewtopic.php?t=215 | ||
Dies ist ein Text, der an jeden Beitrag von dir angehängt werden kann. Es besteht eine Limit von 500 Buchstaben.
Zuletzt bearbeitet von CodeMaster am Mo Apr 01, Parse error: syntax error, unexpected ';' in htdocs\viewtopic.php on line 102 |
tft |
Do, Dez 25, 2003 9:16 Antworten mit Zitat |
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Hi....
gugst du hir...... dann gugst du zu wenig. Leider wird hir die erzeugung des DECL nicht erleutert. |
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TFT
https://www.sourcemagic.ch Monkey,HTML5,CSS3,W 10 64 Bit, 32 GB Ram, GTX Titan, W8 ist Müll !!!!!! |
IonPainter |
Do, Dez 25, 2003 17:04 Antworten mit Zitat |
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Zitat: New DLL interface spec ---------------------- There is now a directory in the root blitzpath called 'userlibs'. By adding DLLs and '.decls' files to this directory, you can extend blitz's command set. DLLs contain actually library code, while .decls files contain 'declarations' to be added to the base command set. These declarations describe the functions contained in the Dll. Format of decls files --------------------- Decls files should always start with a '.lib' directive, followed by the quoted name of the DLL to be loaded, eg: .lib "mylib.dll" Following the .lib is a list of function declarations. The syntax of these is identical to function declarations in Blitz, with the following exceptions: * No default parameter values are allowed. * If no function return type is specified, the function is a 'void' function - ie: it returns nothing. * Instead of object parameters, you can only specify 'void*' parameters using a '*' type tag. Such parameters can be assigned ANY object or bank, so BE CAREFUL! * A declaration may be optionally followed by a 'decorated name'. This takes the form of a ':' followed by a quoted string denoting the decorated name, eg: MyFunction( text$ ):"_MyFunction@4" MessageBox%( hwnd,text$,title$,style ):"MessageBoxA" The decorated name is the name of the function as it appears in the dll, and only needs to be specified if it is different from the actual function name. Writing DLLs ------------ All functions MUST use the _stdcall calling convention. Floats are passed and returned as per standard C/C++ conventions. Strings are passed and returned in 'C' format - ie: a pointer to a null-terminated sequence of characters. Returned strings must be in a 'static' memory buffer. Once the function returns, this string is immediately copied into an internal Blitz style string, so its OK to share this buffer between multiple functions. Both banks and objects can be passed to functions. The value passed is the address of the first byte of storage. No information is sent regarding the size or type of memory passed so, again, BE CAREFUL! Neither Banks or objects can be returned from functions. Arrays are not supported at all. VisualC decorates symbols quite heavily! If you are coding in 'C', the necessary stdcall specifier will cause a '_' to be prepended, and a '@' (followed by the number of bytes passed to the function - ie: number of parameters*4) to be appended. So, something like: 'void _stdcall MyFunc( int x )' will end up as '_MyFunc@4'. In C++, the name decoration is even messier! But you can supress it by using the 'extern "C"' feature (see examples below) so you're just left with the 'C' stdcall mess. Other languages such as Delphi and Purebasic don't appear to suffer from this feature, but it can be worthwhile looking through dll symbols if you're having problems. Check out PEview at http://www.magma.ca/~wjr Open your dll and select 'SECTION .rdata'/'EXPORT address table' to have a look at the exported symbols your compiler has seen fit to bestow upon your dll. Example ------- Ok, here's a little C++ example, as it would appear in VisualC. First, we write the DLL: //demo.dll // #include <math.h> #include <string.h> #include <stdlib.h> #define BBDECL extern "C" _declspec(dllexport) #define BBCALL _stdcall //returns a float and has 6 float parameters BBDECL float BBCALL VecDistance( float x1,float y1,float z1,float x2,float y2,float z2 ){ float dx=x1-x2,dy=y1-y2,dz=z1-z2; return sqrtf( dx*dx+dy*dy+dz*dz ); } //returns a string and has one string parameter BBDECL const char * BBCALL ShuffleString( const char *str ){ static char *_buf; int sz=strlen(str); delete[] _buf; _buf=new char[ sz+1 ]; strcpy( _buf,str ); for( int k=0;k<sz;++k ){ int n=rand()%sz; int t=_buf[k];_buf[k]=_buf[n];_buf[n]=t; } return _buf; } After building this, the resultant 'demo.dll' should be placed in the userlibs directory. Now, we also need to create a 'demo.decls' file, describing the functions in our dll. This file is also placed in the userlibs directory: .lib "demo.dll" VecDistance#( x1#,y1#,z1#,x2#,y2#,z2# ):"_VecDistance@24" ShuffleString$( str$ ):"_ShuffleString@4" ...Voila! The next time Blitz is started up, the new commands appear within the IDE and can be used. Aus der UserLibs.txt im UserLibs verzeichnis... |
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tft |
Do, Dez 25, 2003 19:41 Antworten mit Zitat |
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Hi....
wenn mein Englisch nicht so schrott währe.... |
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TFT
https://www.sourcemagic.ch Monkey,HTML5,CSS3,W 10 64 Bit, 32 GB Ram, GTX Titan, W8 ist Müll !!!!!! |
IonPainter |
Do, Dez 25, 2003 20:30 Antworten mit Zitat |
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lasses halt von google übersetzen... | ||
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