Hi folks, I have to write a background application for a mobile terminal (equipped with integrated scaner engine, keyboard, serial port and so on...) with a CE4.2 OS. The app shall read data from the serial port, do a little magic with this data (changing some letters against others, deleting carrige returns) and insert the result into a textbox of the current foreground application. Serial communication isn't the problem, but inserting the data into the textbox is a real head-scratcher to me. :confused: I wrote a similar application for a normal PC. Then I used the SendKeys class to to the job, but unfortunately this class isn't available in the Compact Framework. :( I thought about using P/Invoke, but I don't have a clue which function of which dll I should use... :^) Does anyone have an idea how to solve this problem? Thanks in advance! Reinhard

Many thanks to all of you!!! I've tried some of the hints and esp. the SendKeys object helped a lot. You've saved my day... :-D Reinhard

Hi all, I want to write a little tool which reads some characters from the serial port and puts them directly into the keyboard buffer, so that they appear in the currently active application at the current cursor position. Handling of the seral port isn't a problem, but can anyone give me a hint how to emulate a keystroke from within a program (C/C++, WinXp) :confused: Thanks! Reinhard

Hi jlr, I've already tried both calling conventions. I suppose they did something more than only calling the DLL function from within the LIB file :sigh: Undecorating the C++ functions also didn't help... I hoped that there could be some way I didn't hear of until now to find out the parameters, but it seems as if there is nothing to do the trick. At the moment a colleague of mine is trying to find out who (in person) was the original creator of the library. Perhaps we can find it out by this way. :rolleyes: Once again thanks! Reinhard

Hi jlr, I thought that the short version of the story (i.e. the description of the actual problem) would do it, but here we go with the whole story... Years ago we developed a software which read some digital and analog values by using a special I/O card, analyzed the data and depending on the results of this reacted with screen and I/O outputs. We sold some dozen of the units (hardware and software) and still do service and further development for the solution. The card as well as the library (and the DLL) to read/write the ports were manufactured by a small German firm that doesn't exist anymore. Now we have do do some changes within the software and unfortunately it seems as if the (packed) EXE file becomes to large to fit onto a floppy disk. Since the machines we sold at that time didn't have a CD-ROM drive I thougth about how to create a smaller file... I don't have the source files of the driver/library and I also have no DEF file of the DLL. The only thing I have are some LIB files (for the different memory models), the DLL and a written documentation. :( I tried to call the DLL functions directly with the very same parameters as I have to use when using the LIB, but that didn't work. Therefore I search for a possibility to find out the type and order of the parameters I have to use when calling the DLL functions at runtime... Hope s/o can help me. Thanks and Greetings from Germany Reinhard

Hi all, I've got the following problem: I try to write an application which should use a specific function that is available in a DLL. Since I only need one of the various DLL functions and it is neccessary to create an EXE file as small as possible I thought about not binding the according LIB file into the project and loading the DLL at runtime. My problem is, that I can identify the function name within the DLL (by using DependencyWalker), but I don't know the function parameters (type and order) I have to use. I also don't know the type of the return value... :( Is there any possibility (some kind of utility prog or so...) to get some information about the parameters to use??? Many thanks in advance! Reinhard