Re: Problem with mathlink:PLEASE HELP ME
- To: mathgroup at smc.vnet.net
- Subject: [mg97683] Re: [mg97623] Problem with mathlink:PLEASE HELP ME
- From: Chris Hill <chill at wolfram.com>
- Date: Wed, 18 Mar 2009 04:57:39 -0500 (EST)
- References: <200903170959.EAA17091@smc.vnet.net>
At 04:59 AM 3/17/2009, olfa wrote: >Hi mathematica community, >Under windows xp,I have a c++ program in which I established a >comunication with mathematica via mathlink. >But when my program is executed, a "Choose a MathLink Program to >Launch" dialog box appears and ask me to choose between some >executables. This is my code and the problem should be in the path of >the connection. >In this path I have chosen to launch mathkernel.exe so why the dialog box >appears and How can I GET RID OF THIS DIALOG BOX? >Thank you, I'm very gratefull for any help. > > ml = MLOpenString(env,"-linkname \"C:\\Program Files\\Wolfram >Research\\Mathematica\\6.0 \\MathKernel.exe\" -mathlink",&error); I suspect that you are encountering escaping issues with your linkname string containing the Windows path backslashes. Also, the -mathlink parameter to the kernel should be part of the linkname. Here are a few different ways to address those issues: 1) Use forward slashes (which Windows XP accepts): ml = MLOpenString("-linkname \"C:/Program Files/Wolfram Research/Mathematica/6.0/MathKernel.exe -mathlink\"", &error); 2) Add more escaping of the backslashes, one level for the C compiler and the other for MathLink: ml = MLOpenString("-linkname \"C:\\\\Program Files\\\\Wolfram Research\\\\Mathematica\\\\6.0\\\\MathKernel.exe -mathlink\""); 3) You may find it more convenient to use MLOpenArgcArgv instead of MLOpenString, which avoids the escaping issue: char* v[10]; int c = 0; v[c++] = "-linkname"; v[c++] = "C:\\Program Files\\Wolfram Research\\Mathematica\\6.0\\MathKernel.exe -mathlink"; ml = MLOpenArgcArgv(env, c, v, &error); Finally, if you are interested in suppressing the dialog box even if the link name was in fact incorrect you can use the MLDontBrowse option: ml = MLOpenString(env, "-linkname badlinkname -linkoptions MLDontBrowse",&error); Chris Hill Wolfram Research
- References:
- Problem with mathlink:PLEASE HELP ME
- From: olfa <olfa.mraihi@yahoo.fr>
- Problem with mathlink:PLEASE HELP ME