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https://github.com/wailsapp/wails.git
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98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
//go:build windows
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/*
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* Copyright (C) 2019 Tad Vizbaras. All Rights Reserved.
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* Copyright (C) 2010-2012 The W32 Authors. All Rights Reserved.
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*/
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package w32
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import (
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"github.com/wailsapp/go-webview2/pkg/combridge"
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"syscall"
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"unsafe"
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)
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var (
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modole32 = syscall.NewLazyDLL("ole32.dll")
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procCoInitializeEx = modole32.NewProc("CoInitializeEx")
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procCoInitialize = modole32.NewProc("CoInitialize")
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procOleInitialize = modole32.NewProc("OleInitialize")
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procCoUninitialize = modole32.NewProc("CoUninitialize")
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procCreateStreamOnHGlobal = modole32.NewProc("CreateStreamOnHGlobal")
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procRegisterDragDrop = modole32.NewProc("RegisterDragDrop")
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procRevokeDragDrop = modole32.NewProc("RevokeDragDrop")
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)
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func CoInitializeEx(coInit uintptr) HRESULT {
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ret, _, _ := procCoInitializeEx.Call(
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0,
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coInit)
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switch uint32(ret) {
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case E_INVALIDARG:
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panic("CoInitializeEx failed with E_INVALIDARG")
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case E_OUTOFMEMORY:
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panic("CoInitializeEx failed with E_OUTOFMEMORY")
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case E_UNEXPECTED:
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panic("CoInitializeEx failed with E_UNEXPECTED")
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}
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return HRESULT(ret)
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}
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func CoInitialize() {
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procCoInitialize.Call(0)
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}
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func CoUninitialize() {
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procCoUninitialize.Call()
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}
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func CreateStreamOnHGlobal(hGlobal HGLOBAL, fDeleteOnRelease bool) *IStream {
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stream := new(IStream)
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ret, _, _ := procCreateStreamOnHGlobal.Call(
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uintptr(hGlobal),
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uintptr(BoolToBOOL(fDeleteOnRelease)),
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uintptr(unsafe.Pointer(&stream)))
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switch uint32(ret) {
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case E_INVALIDARG:
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panic("CreateStreamOnHGlobal failed with E_INVALIDARG")
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case E_OUTOFMEMORY:
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panic("CreateStreamOnHGlobal failed with E_OUTOFMEMORY")
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case E_UNEXPECTED:
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panic("CreateStreamOnHGlobal failed with E_UNEXPECTED")
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}
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return stream
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}
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func OleInitialise() {
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procOleInitialize.Call()
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}
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func RegisterDragDrop(hwnd HWND, dropTarget *DropTarget) error {
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dt := combridge.New[iDropTarget](dropTarget)
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hr, _, _ := procRegisterDragDrop.Call(
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hwnd,
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dt.Ref(),
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)
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if hr != S_OK {
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return syscall.Errno(hr)
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}
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return nil
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}
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func RevokeDragDrop(hwnd HWND) error {
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hr, _, _ := procRevokeDragDrop.Call(
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hwnd,
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)
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if hr != S_OK {
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return syscall.Errno(hr)
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}
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return nil
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}
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