SendMessageA DLL call in ISM

[dashelman]

Hi there.
Does anyone have an example of call the User32.dll function named SendMessageA?

This DLL function can be used to send spawned windows control events...

Sincerely,
David A

[Christopher_Pai]

A Google search for "InstallScript SendMessage" reveals many hits including this page on InstallSite:

http://www.installsite.org/pages/en/isp_os.htm

As an aside I wasn't familiar with SendMessageTimeout. I'd always just used SendMessage over the years. Also depending on what you are trying to do, a Standard DLL CA ( without using InstallScript ) might fit your needs.

[dashelman]

Exactly what I was thinking. Thank you, Chris.
I wanted a standard DLL CA is what I have been researching.
Right now the DLL signature is
NUMBER SendMessageA(in HWND=32770,in NUMBER=1001,in STRING="0",inout STRING="0")


My error is now, the TARGET field.
The custom action can not find User32.dll.

I have even tried adding the file to the installed copmponents, but the windows installer knew that the file1 key was not slated for installation.

I have also tried setting a property which results to the entire path. The file was never found.