102 lines
2.6 KiB
Go
102 lines
2.6 KiB
Go
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// Copyright 2010 The win Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build windows
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package win
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import (
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"golang.org/x/sys/windows"
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"syscall"
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"unsafe"
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)
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// EnumPrinters flags
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const (
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PRINTER_ENUM_DEFAULT = 0x00000001
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PRINTER_ENUM_LOCAL = 0x00000002
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PRINTER_ENUM_CONNECTIONS = 0x00000004
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PRINTER_ENUM_FAVORITE = 0x00000004
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PRINTER_ENUM_NAME = 0x00000008
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PRINTER_ENUM_REMOTE = 0x00000010
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PRINTER_ENUM_SHARED = 0x00000020
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PRINTER_ENUM_NETWORK = 0x00000040
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)
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type PRINTER_INFO_4 struct {
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PPrinterName *uint16
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PServerName *uint16
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Attributes uint32
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}
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var (
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// Library
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libwinspool *windows.LazyDLL
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// Functions
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deviceCapabilities *windows.LazyProc
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documentProperties *windows.LazyProc
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enumPrinters *windows.LazyProc
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getDefaultPrinter *windows.LazyProc
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)
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func init() {
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// Library
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libwinspool = windows.NewLazySystemDLL("winspool.drv")
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// Functions
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deviceCapabilities = libwinspool.NewProc("DeviceCapabilitiesW")
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documentProperties = libwinspool.NewProc("DocumentPropertiesW")
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enumPrinters = libwinspool.NewProc("EnumPrintersW")
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getDefaultPrinter = libwinspool.NewProc("GetDefaultPrinterW")
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}
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func DeviceCapabilities(pDevice, pPort *uint16, fwCapability uint16, pOutput *uint16, pDevMode *DEVMODE) uint32 {
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ret, _, _ := syscall.Syscall6(deviceCapabilities.Addr(), 5,
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uintptr(unsafe.Pointer(pDevice)),
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uintptr(unsafe.Pointer(pPort)),
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uintptr(fwCapability),
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uintptr(unsafe.Pointer(pOutput)),
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uintptr(unsafe.Pointer(pDevMode)),
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0)
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return uint32(ret)
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}
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func DocumentProperties(hWnd HWND, hPrinter HANDLE, pDeviceName *uint16, pDevModeOutput, pDevModeInput *DEVMODE, fMode uint32) int32 {
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ret, _, _ := syscall.Syscall6(documentProperties.Addr(), 6,
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uintptr(hWnd),
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uintptr(hPrinter),
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uintptr(unsafe.Pointer(pDeviceName)),
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uintptr(unsafe.Pointer(pDevModeOutput)),
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uintptr(unsafe.Pointer(pDevModeInput)),
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uintptr(fMode))
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return int32(ret)
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}
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func EnumPrinters(Flags uint32, Name *uint16, Level uint32, pPrinterEnum *byte, cbBuf uint32, pcbNeeded, pcReturned *uint32) bool {
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ret, _, _ := syscall.Syscall9(enumPrinters.Addr(), 7,
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uintptr(Flags),
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uintptr(unsafe.Pointer(Name)),
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uintptr(Level),
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uintptr(unsafe.Pointer(pPrinterEnum)),
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uintptr(cbBuf),
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uintptr(unsafe.Pointer(pcbNeeded)),
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uintptr(unsafe.Pointer(pcReturned)),
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0,
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0)
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return ret != 0
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}
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func GetDefaultPrinter(pszBuffer *uint16, pcchBuffer *uint32) bool {
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ret, _, _ := syscall.Syscall(getDefaultPrinter.Addr(), 2,
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uintptr(unsafe.Pointer(pszBuffer)),
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uintptr(unsafe.Pointer(pcchBuffer)),
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0)
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return ret != 0
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}
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