ButtonIcon.cpp
1.4 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
/*
* Copyright 2002-2014 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* CC/LICENSE
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "ButtonIcon.h"
CButtonIcon::CButtonIcon() : m_iconIndex(0)
{
}
CButtonIcon::~CButtonIcon()
{
}
void CButtonIcon::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// 获取图标， 此处如果图标的index不存在，在有些机器上除了返回空的HICON外，还会报错
HICON h = AfxGetApp()->LoadIcon(m_iconIndex);
// IDI_ASTERISK-信息，IDI_EXCLAMATION-警告，IDI_QUESTION-问号，IDI_HAND-错误，IDI_APPLICATION-应用程序图标
if(!h)
h = AfxGetApp()->LoadStandardIcon(IDI_HAND);
// 获得DC资源
CDC *pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
// 保存DC
int oldDC = pDC->SaveDC();
// 绘制图标按钮
pDC->DrawIcon(0, 0, h);
// 还原DC
pDC->RestoreDC(oldDC);
}
void CButtonIcon::PreSubclassWindow()
{
// 修改风格为自绘
ModifyStyle(0, BS_OWNERDRAW);
CButton::PreSubclassWindow();
}
void CButtonIcon::SetIcon(int index)
{
m_iconIndex = index;
}