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Retrieving Printer Capabilities

In Enumerating printer forms article the DeviceCapabilities function is used to mark print forms supported by particular printer. It can be used to retrieve other printer capabilities as well.

Getting additional info about pressed keyboard or mouse keys

The GetKeyState function retrieves the status of the specified virtual key.

Keyboard Input Virtual-Key Codes

Virtual-Key Codes constants for Windows API Keyboard Input functions

VFP 9.0 Versions

VFP 9.0 version information for service packs and hotfixes.

Verify ActiveX presence and registration

An ActiveX installation on PC can be verified by finding its ProgID from OleClass property in the registry.

Add and delete custom printer forms

To distribute applications that use reports with custom paper size you have to create custom printer forms on every destination PC that runs Windows 2000 or later. The MS KB article Q157172 explains how it can be done manually. However there's a way to do that programmatically using Windows API.

Enumerating printer forms

Enumerating of printer forms can be done with Windows API EnumForms function. Contrary to what MSDN says, it returns the list of all printer forms on PC, not just for the specific printer. On other hand, DeviceCapabilities can return a list of supported paper sizes for the printer.

Get number of jobs in print queue

The number of jobs in print queue can be retrieved by simplified version of Enumerating jobs in print queue

Enumerating jobs in print queue

Enumerating jobs in a print queue can be done with

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