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https://github.com/wailsapp/wails.git
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71 lines
1.7 KiB
Go
71 lines
1.7 KiB
Go
//go:build windows
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/*
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* Copyright (C) 2019 The Winc Authors. All Rights Reserved.
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*/
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package winc
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import (
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"syscall"
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"unsafe"
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"github.com/wailsapp/wails/v2/internal/frontend/desktop/windows/winc/w32"
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)
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type ComboBox struct {
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ControlBase
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onSelectedChange EventManager
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}
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func NewComboBox(parent Controller) *ComboBox {
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cb := new(ComboBox)
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cb.InitControl("COMBOBOX", parent, 0, w32.WS_CHILD|w32.WS_VISIBLE|w32.WS_TABSTOP|w32.WS_VSCROLL|w32.CBS_DROPDOWNLIST)
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RegMsgHandler(cb)
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cb.SetFont(DefaultFont)
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cb.SetSize(200, 400)
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return cb
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}
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func (cb *ComboBox) DeleteAllItems() bool {
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return w32.SendMessage(cb.hwnd, w32.CB_RESETCONTENT, 0, 0) == w32.TRUE
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}
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func (cb *ComboBox) InsertItem(index int, str string) bool {
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lp := uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(str)))
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return w32.SendMessage(cb.hwnd, w32.CB_INSERTSTRING, uintptr(index), lp) != w32.CB_ERR
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}
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func (cb *ComboBox) DeleteItem(index int) bool {
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return w32.SendMessage(cb.hwnd, w32.CB_DELETESTRING, uintptr(index), 0) != w32.CB_ERR
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}
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func (cb *ComboBox) SelectedItem() int {
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return int(int32(w32.SendMessage(cb.hwnd, w32.CB_GETCURSEL, 0, 0)))
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}
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func (cb *ComboBox) SetSelectedItem(value int) bool {
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return int(int32(w32.SendMessage(cb.hwnd, w32.CB_SETCURSEL, uintptr(value), 0))) == value
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}
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func (cb *ComboBox) OnSelectedChange() *EventManager {
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return &cb.onSelectedChange
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}
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// Message processor
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func (cb *ComboBox) WndProc(msg uint32, wparam, lparam uintptr) uintptr {
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switch msg {
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case w32.WM_COMMAND:
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code := w32.HIWORD(uint32(wparam))
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switch code {
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case w32.CBN_SELCHANGE:
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cb.onSelectedChange.Fire(NewEvent(cb, nil))
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}
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}
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return w32.DefWindowProc(cb.hwnd, msg, wparam, lparam)
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//return cb.W32Control.WndProc(msg, wparam, lparam)
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}
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