/
ole.go
252 lines (218 loc) · 6.53 KB
/
ole.go
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//----------------------------------------
//
// Copyright © ying32. All Rights Reserved.
//
// Licensed under Apache License 2.0
//
//----------------------------------------
//+build windows
package intf
import (
"errors"
"syscall"
"unsafe"
"github.com/ying32/govcl/vcl/win"
"github.com/ying32/govcl/vcl/types"
"github.com/go-ole/go-ole"
)
var (
oleaut32dll = syscall.NewLazyDLL("oleaut32.dll")
_DispCallFunc = oleaut32dll.NewProc("DispCallFunc")
// 虚方法表的,因为Taskbar的没有实现IDispatch接口,所以只能用这种绝对的方式做
virtualMethods = map[string]uintptr{
"Release": 3,
// function HrInit: HRESULT; stdcall;
"HrInit": 4,
// function SetProgressValue(hwnd: HWND; ullCompleted: ULONGLONG; ullTotal: ULONGLONG): HRESULT; stdcall;
"SetProgressValue": 10,
//function SetProgressState(hwnd: HWND; tbpFlags: Integer): HRESULT; stdcall;
"SetProgressState": 11,
// function ThumbBarAddButtons(hwnd: HWND; cButtons: UINT; pButton: PThumbButton): HRESULT; stdcall;
"ThumbBarAddButtons": 16,
// function ThumbBarUpdateButtons(hwnd: HWND; cButtons: UINT; pButton: PThumbButton): HRESULT; stdcall;
"ThumbBarUpdateButtons": 17,
// function SetOverlayIcon(hwnd: HWND; hIcon: HICON; pszDescription: LPCWSTR): HRESULT; stdcall;
"SetOverlayIcon": 19,
// function SetThumbnailTooltip(hwnd: HWND; pszTip: LPCWSTR): HRESULT; stdcall;
"SetThumbnailTooltip": 20}
)
func getOffset(name string) uintptr {
if v, ok := virtualMethods[name]; ok {
return v
}
return 0
}
func Succeeded(Status types.HResult) bool {
return Status&types.HResult(0x80000000) == 0
}
type ITaskbarList4 uintptr
func (ii ITaskbarList4) Release() error {
if ii > 0 {
x := (*ole.IUnknown)(unsafe.Pointer(ii))
x.Release()
}
//var result ole.VARIANT
//err := DispCallFunc(uintptr(unsafe.Pointer(ii)), getOffset("Release"), ole.CC_STDCALL, ole.VT_EMPTY, nil, nil, &result)
//if err != nil {
// return err
//}
//if !Succeeded(types.HResult(result.Val)) {
// return ole.NewError(uintptr(result.Val))
//}
return nil
}
func (ii ITaskbarList4) HrInit() error {
var result ole.VARIANT
err := DispCallFunc(uintptr(ii), getOffset("HrInit"), ole.CC_STDCALL, ole.VT_EMPTY, nil, nil, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
func (ii ITaskbarList4) addOrUpdateButtons(offset uintptr, hWnd types.HWND, buttons []TThumbButton) error {
if len(buttons) == 0 {
return errors.New("buttons == 0")
}
var result ole.VARIANT
argsType := []ole.VT{
ole.VT_UI4,
ole.VT_UI4,
ole.VT_PTR,
}
arg1 := ole.NewVariant(ole.VT_UI4, int64(hWnd))
arg2 := ole.NewVariant(ole.VT_UI4, int64(len(buttons)))
arg3 := ole.NewVariant(ole.VT_UI4, int64(uintptr(unsafe.Pointer(&buttons[0]))))
args := []*ole.VARIANT{
&arg1,
&arg2,
&arg3,
}
err := DispCallFunc(uintptr(ii), offset, ole.CC_STDCALL, ole.VT_EMPTY, argsType, args, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
func (ii ITaskbarList4) ThumbBarAddButtons(hWnd types.HWND, buttons []TThumbButton) error {
return ii.addOrUpdateButtons(getOffset("ThumbBarAddButtons"), hWnd, buttons)
}
func (ii ITaskbarList4) ThumbBarUpdateButtons(hWnd types.HWND, buttons []TThumbButton) error {
return ii.addOrUpdateButtons(getOffset("ThumbBarUpdateButtons"), hWnd, buttons)
}
func (ii ITaskbarList4) SetThumbnailTooltip(hWnd types.HWND, tip string) error {
var result ole.VARIANT
argsType := []ole.VT{
ole.VT_UI4,
ole.VT_LPWSTR,
}
arg1 := ole.NewVariant(ole.VT_UI4, int64(hWnd))
arg2 := ole.NewVariant(ole.VT_LPWSTR, int64(win.CStr(tip)))
args := []*ole.VARIANT{
&arg1,
&arg2,
}
err := DispCallFunc(uintptr(ii), getOffset("SetThumbnailTooltip"), ole.CC_STDCALL, ole.VT_EMPTY, argsType, args, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
func (ii ITaskbarList4) SetProgressValue(hWnd types.HWND, ullCompleted, ullTotal uint64) error {
var result ole.VARIANT
argsType := []ole.VT{
ole.VT_UI4,
ole.VT_UI8,
ole.VT_UI8,
}
arg1 := ole.NewVariant(ole.VT_UI4, int64(hWnd))
arg2 := ole.NewVariant(ole.VT_UI8, int64(ullCompleted))
arg3 := ole.NewVariant(ole.VT_UI8, int64(ullTotal))
args := []*ole.VARIANT{
&arg1,
&arg2,
&arg3,
}
err := DispCallFunc(uintptr(ii), getOffset("SetProgressValue"), ole.CC_STDCALL, ole.VT_EMPTY, argsType, args, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
func (ii ITaskbarList4) SetProgressState(hWnd types.HWND, flags int32) error {
var result ole.VARIANT
argsType := []ole.VT{
ole.VT_UI4,
ole.VT_I4,
}
arg1 := ole.NewVariant(ole.VT_UI4, int64(hWnd))
arg2 := ole.NewVariant(ole.VT_I4, int64(flags))
args := []*ole.VARIANT{
&arg1,
&arg2,
}
err := DispCallFunc(uintptr(ii), getOffset("SetProgressState"), ole.CC_STDCALL, ole.VT_EMPTY, argsType, args, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
func (ii ITaskbarList4) SetOverlayIcon(hWnd types.HWND, hIcon types.HICON, pszDescription string) error {
var result ole.VARIANT
argsType := []ole.VT{
ole.VT_UI4,
ole.VT_UI4,
ole.VT_LPWSTR,
}
arg1 := ole.NewVariant(ole.VT_UI4, int64(hWnd))
arg2 := ole.NewVariant(ole.VT_UI4, int64(hIcon))
arg3 := ole.NewVariant(ole.VT_LPWSTR, int64(win.CStr(pszDescription)))
args := []*ole.VARIANT{
&arg1,
&arg2,
&arg3,
}
err := DispCallFunc(uintptr(ii), 11, ole.CC_STDCALL, ole.VT_EMPTY, argsType, args, &result)
if err != nil {
return err
}
if !Succeeded(types.HResult(result.Val)) {
return ole.NewError(uintptr(result.Val))
}
return nil
}
// -------------- call-------------------------
func DispCallFunc(pvInstance uintptr, oVft uintptr, cc int32, vtReturn ole.VT, argTypes []ole.VT, args []*ole.VARIANT, result *ole.VARIANT) error {
if pvInstance == 0 {
return errors.New("pvInstance == 0")
}
oVft = unsafe.Sizeof(pvInstance) * (oVft - 1)
argLen := int32(len(argTypes))
Argsptr := uintptr(0)
if len(args) > 0 {
Argsptr = uintptr(unsafe.Pointer(&args[0]))
}
argTypePtr := uintptr(0)
if len(argTypes) > 0 {
argTypePtr = uintptr(unsafe.Pointer(&argTypes[0]))
}
r, _, _ := _DispCallFunc.Call(pvInstance, oVft, uintptr(cc), uintptr(vtReturn), uintptr(argLen), argTypePtr, Argsptr, uintptr(unsafe.Pointer(result)))
if !Succeeded(r) {
return ole.NewError(r)
}
return nil
}