Visual Basic User control binary file
CTX is a file extension for a control binary file used with Visual Basic. CTX files contain images and binary data. CTX files correspond to a Visual Basic CTL file, which is used to contain the text or non-binary data information. CTX files can be opened and edited with Microsoft Visual Studio.
Learn more about .CTX files:
Read more about Visual Basic at ITKnowledgeExchange.com.
Visit the Microsoft Visual Basic web page.