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DllCall Information
- Beep
- Booted UEFI or BIOS
- Calling HLLAPI
- Change Screen Resolution to standard size
- Change Target of My Documents Folder
- Check for Input Idle - No User Input
- Create and Release Mutex
- Crypto API Functions
- Determine XP Home vs XP Pro using GetVersionEx API
- Direct Memory Copy - RtlCopyMappedMemory
- DLL Pointer Problem
- DllCall Additional Information
- DllCall additional info
- DllCall Example from User
- DllCall to CP5DLL32 DLL
- DllCall to GetExitCodeProcess
- DllCall To GetFileAttributesEx
- DllCall With Callback Example
- DllCall with Structures
- DllCalls to Dll with Double as Passed Param
- DllLastError GetLastError Differences
- DllStructAlloc Example
- Dynamically Change Proxy Settings for an Existing IE Session
- Error 1379 - DllCall - Bad Parameter List Error
- Find a DFS Target Given a DFS Link
- Float as a passed param to DLLCALL
- Font Installation
- FreeImage DllCalls
- General DllCall Information
- Get Username via DllCall
- Get Window with Focus
- Get Windows System Error String
- getprocesstimes_udf
- How To Call Windows API Functions
- How to Get Encrypted Attribute from a Directory
- How to Mount a Local Directory as a Drive Letter
- IntControl 32 and Structures
- Keep XP from Going Into Standby
- Link to windows API documentation
- Native WIFI API
- NTFS File Time Stamps
- Open GL Example
- OpenGL Drawing Example
- Pass Strings by Reference with DLLCall using Binary Buffers
- Reading Pixels in an Image
- Refresh Everything By Telling Windows an Association has Changed
- Shell LightWeight API calls to ColorRGBToHLS and ColorHLSToRGB
- SHQueryUserNotificationState
- Stamp text on bitmaps
- Turn Off Monitor
- Using Dll Created in C to Pass Address
- Using lp binary for DLL callback lpstrs
- VB Dll Usage with DllCall
- Why is BinaryEODset Needed
- WinSHow No Activate
- WM_SetIcon Message to Change Icon
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General DllCall Information
Keywords: dllcall
Question:
- Is there a way to write our own dll's with winbatch? are they that difficult?
- I have heard that it is possible to use other dll's from say a "packaged" vendor like microsoft. How would I know what the dll does and what its functions, sytaxtical requirements, etc, ad nausium are? I would figure that "dllcall" function group would handle the passing of parameters to that dll. right?
Answer:
- No. Using MSC or other compilers you may be able to write Dlls that WinBatch can use, but you cannot
make a DLL with WinBatch.
What are you hoping to do?
- Ah. That is the crux of the issue. You *need* the documentation on how to use the DLL. When people sell
or give away DLLs for such use they will provide documentation on how to use the DLL. WinBatch can
work with many standard "Windows API" type DLLs.
You can get documentation for the Windows DLLs fairly easily. Ummm the MS Website has a lot of the documentation required.
However it can be a tough task to get your first few DllCalls running, but after that it gets a *lot* easier.
Question:
I am not really looking to accomplish any thing more than incoporate more functionality into my programs. I thought I saw a mention of dll writing and whatnot in another discussion here. just thought I would ask. What are the stumbling blocks that you think are most notorius for keeping newbies dllcall's from working?Answer:
It kind of helps (but is not competely necessary) to have a C programming background when trying to work with the documentation available for most DLLS.When using DllCall to call DLLs special pains must be taken for and "output" type parameters in the calling parameters.
Different special pains must be taken for any API thts wants a "structure".
But basically you are in the correct place.
For Windows APIs See..
Functions in Alphabetical order:
http://msdn.microsoft.com/library/psdk/psdkref/alphafunc_3bjm.htmFunctions by category:
http://msdn.microsoft.com/library/psdk/psdkref/catfunc_26m1.htmGet a few of them working to cut your teeth. Post code here for comments and help. Keep it simple. Drink lots of coffee.
MAKE SURE YOUR MACHINE IS BACKED UP!
DllCall - IsCharAlphaNumericA
Question:
- I've decided to take the plunge into API calls. I'm getting my feet wet with simple calls like
IsCharAlphaNumericA.
The code below doesn't generate any errors, but sometimes the SAME character being tested is true (1) and sometimes it's False (0)!
Is there some sort of caching going on? I'm I doing it wrong? What's going on?
I tried adding GetLastError but it always returns 0. Pretty sure I'm doing it wrong.
- Is there are reference chart (or at least a rule of thumb) that shows how the multitude of WinAPI data types map to the 4 or 5 Winbatch types?
******************************************* a0="@" dllname=strcat(dirwindows(1),"USER32.DLL") dllname2=strcat(dirwindows(1),"Kernel32.dll") a1=DllCall(dllname, word:"IsCharAlphaNumericA", lpstr:a0) error= DllCall(dllname2, long:"GetLastError") Message(a0,"Alpha/Num? = %a1%%@CRLF%Last Error = %error%")
Answer:
>1)1)I've decided to take the >plunge into API calls. I'm >getting my feet wet with >simple calls like >IsCharAlphaNumericA.Not the simplest call. But not a bad choice.
> >The code below doesn't >generate any errors, but >sometimes the SAME character >being tested is true (1) and >sometimes it's False (0)! > >Is there some sort of caching >going on? I'm I doing it >wrong? What's going on? > >I tried adding GetLastError >but it always returns 0. >Pretty sure I'm doing it >wrong. >Basically you were not checking what you though you were checking. A string pointer was being passed, and it checked the somewhat random value of the string pointer.
>2) Is there are reference >chart (or at least a rule of >thumb) that shows how the >multitude of WinAPI data types >map to the 4 or 5 Winbatch >types?
- Numbers and handles are generally LONG.
- NULL is lpnull
- Strings are generally LPSTR
- Anything that tries to pass data back thru a variable has to be done via a binary buffer.
- Most anything can be forced to a long.
a0="B" a0x=strsub(a0,1,1) a0x=Char2Num(a0x) dllname=strcat(dirwindows(1),"USER32.DLL") dllname2=strcat(dirwindows(1),"Kernel32.dll") a1=DllCall(dllname, long:"IsCharAlphaNumericA", long:a0x) error= DllCall(dllname2, long:"GetLastError") Message(a0,"Alpha/Num? = %a1%%@CRLF%Last Error = %error%")
Article ID: W14839
File Created: 2001:11:08:12:40:16
Last Updated: 2001:11:08:12:40:16