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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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FreeImage DllCalls
Use Freeimage to convert an image.
http://freeimage.sourceforge.net/
Notes: Apparently __stdcall "decorates" (mangles) the function name when it is exported, so that in the DLL it becomes:
_MyFunction@4
where the number following the '@' symbol is the stack space used by the function (the parameter count * 4). This prevents DllCall from accessing the function.
FIF_PCX = 10
FIF_TIFF = 18
pcxfile = "C:\Temp\Vin7200.pcx"
tifffile = strcat(filepath(pcxfile), fileroot(pcxfile), ".tif")
dllhandle = DllLoad("C:\Temp\Freeimage\FreeImage\FreeImage\Dist\FreeImage.dll")
;use freeimage to convert an image
image = DllCallcDecl(dllhandle, long:"_FreeImage_Load@12", long:FIF_PCX , lpstr:pcxfile, long:0)
x = DllCallcDecl(dllhandle, long:"_FreeImage_Save@16", long:FIF_TIFF, long:image, lpstr:tifffile, long:0)
x = DllCallcDecl(dllhandle, void:"_FreeImage_Unload@4", long:image)
DllFree(dllhandle)
Run(tifffile,"")
exit
Article ID: W16952
File Created: 2007:07:03:14:27:10
Last Updated: 2007:07:03:14:27:10