{"id":140,"date":"2008-06-26T09:24:14","date_gmt":"2008-06-26T01:24:14","guid":{"rendered":"\/wp\/post\/140.html"},"modified":"2008-06-26T09:24:14","modified_gmt":"2008-06-26T01:24:14","slug":"vc%e4%b8%adpicture-control%e9%80%8f%e6%98%8e%e8%83%8c%e6%99%af%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/lordong.xyz\/wp\/post\/140.html","title":{"rendered":"VC\u4e2dPicture Control\u900f\u660e\u80cc\u666f\u5b9e\u73b0"},"content":{"rendered":"

\u5728VC\u4e2d\u4f7f\u7528Picture Control\u6765\u653e\u7f6e\u56fe\u7247\u65f6\u60f3\u505a\u6210\u900f\u660e\u80cc\u666f\u7684\uff0c\u9009\u62e9Bitmap\u7c7b\u578b\u65f6\u662f\u56fe\u7247\u539f\u6837\u663e\u793a\u51fa\u6765\u7684\uff0c\u60f3\u505a\u6210\u900f\u660e\u7684Icon\u7136\u540e\u5728Picture Control\u4e2d\u9009\u62e9Icon\u7c7b\u578b\uff0c\u53ef\u662f\u63a7\u4ef6\u7f29\u6210\u4e86\u4e00\u4e2a\u56fe\u6807\u3002\u6700\u540e\u53ea\u80fd\u9009\u62e9Bitmap\u7c7b\u578b\uff0c\u56e0\u4e3a\u7528\u8fd9\u79cd\u6a21\u5f0f\u53ef\u4ee5\u628a\u5f88\u591a\u56fe\u7247\u4f7f\u7528\u591a\u4e2aPicture Control\u7ec4\u5408\u8d77\u6765\u3002<\/p>\n

\u5728\u7f51\u4e0a\u627e\u4e86\u4e00\u4e9b\u8d44\u6599\uff0c\u7ecf\u8fc7\u81ea\u5df1\u591a\u65b9\u7684\u5b9e\u9a8c\uff0c\u7ec8\u4e8e\u53ef\u4ee5\u641e\u5b9a\u3002<\/p>\n

\u539f\u7406\u662f\u91cd\u8f7dPicture Control\uff0c\u5728\u7a97\u4f53\u521d\u59cb\u5316\u65f6\u7ed9\u63a7\u4ef6\u8bbe\u7f6e\u56fe\u7247ID\uff0c\u5e76\u53bb\u6389\u63a7\u4ef6\u7684Bitmap\u7c7b\u578b\uff0c\u5373\u8bbe\u7f6e\u6210“\u65e0”\u7c7b\u578b\uff0c\u7136\u540e\u5728OnPaint\u65b9\u6cd5\u4e2d\u91cd\u753b\u56fe\u7247\u3002<\/p>\n

\u5904\u7406\u6b65\u9aa4\u662f\uff1a
1. Picture Control\u4ecd\u4f7f\u7528Bitmap\u7c7b\u578b\uff0c\u9009\u62e9\u6b63\u786e\u7684\u56fe\u7247\u5e76\u5e03\u5c40\u597d\u3002
2. \u5728\u7a97\u4f53\u521d\u59cb\u5316\u65f6\u7ed9\u63a7\u4ef6\u8bbe\u7f6e\u5177\u4f53\u7684\u56fe\u7247ID\u3002<\/p>\n

\u91cd\u8f7d\u7684\u7c7b\u6e90\u7801.h\u6587\u4ef6\uff1a<\/strong><\/font>
#pragma once<\/p>\n

class CTransparentPic : public CStatic
{
 DECLARE_DYNAMIC(CTransparentPic)<\/p>\n

public:
 CTransparentPic();
 virtual ~CTransparentPic();<\/p>\n

 void SetBitmapIndex(UINT nBitmapIndex);<\/p>\n

protected:
 DECLARE_MESSAGE_MAP()<\/p>\n

public:
 afx_msg BOOL OnEraseBkgnd(CDC* pDC);
 afx_msg void OnPaint();<\/p>\n

private:
 UINT m_nBitmapIndex; \/\/ Bitmap index of resource
};<\/p>\n

.cpp\u6587\u4ef6\uff1a
<\/strong><\/font>#include "stdafx.h"
#include "TransparentPic.h"<\/p>\n

IMPLEMENT_DYNAMIC(CTransparentPic, CStatic)<\/p>\n

CTransparentPic::CTransparentPic()
 : m_nBitmapIndex(0)
{
}<\/p>\n

CTransparentPic::~CTransparentPic()
{
}<\/p>\n

BEGIN_MESSAGE_MAP(CTransparentPic, CStatic)
 ON_WM_ERASEBKGND()
 ON_WM_PAINT()
END_MESSAGE_MAP()<\/p>\n

void CTransparentPic::SetBitmapIndex(UINT nBitmapIndex)
{
 ModifyStyle(SS_BITMAP, 0);  \/\/ Remove bitmap style, use owner paint<\/p>\n

 bool bForceRedraw = (m_nBitmapIndex != nBitmapIndex);<\/p>\n

 m_nBitmapIndex = nBitmapIndex;<\/p>\n

 \/\/ Force owner paint
 if (::IsWindow(m_hWnd) && bForceRedraw)
 {
  Invalidate();
 }
}<\/p>\n

\/\/ CTransparentPic message handlers
BOOL CTransparentPic::OnEraseBkgnd(CDC* pDC)
{
 return TRUE;
}<\/p>\n

void CTransparentPic::OnPaint()
{
 CWnd::Default(); \/\/ Calls the default window procedure<\/p>\n

 CClientDC dc(this);
 CBitmap bmp;<\/p>\n

 \/\/ Try to load bitmap
 if (bmp.LoadBitmap(m_nBitmapIndex))
 {
  CDC memDC;<\/p>\n

  memDC.CreateCompatibleDC(NULL);<\/p>\n

  CBitmap* pOldBmp = memDC.SelectObject(&bmp);
  BITMAP bitmap;<\/p>\n

  bmp.GetBitmap(&bitmap);
  TransparentBlt(dc.m_hDC, 0, 0, bitmap.bmWidth, bitmap.bmHeight,
   memDC.m_hDC, 0, 0, bitmap.bmWidth, bitmap.bmHeight, RGB(236, 233, 216));<\/p>\n

  memDC.SelectObject(pOldBmp);
  memDC.DeleteDC();
 }
 else
 {
  \/\/ Draw error information
  dc.TextOut(1, 1, _T("ERROR!"));
 }
}
\u8bf4\u660e\u4e00\u4e0b\uff1a<\/strong>\u4e0a\u9762\u7684RGB(236, 233, 216)\u6307\u7684\u662f\u5236\u4f5c\u56fe\u7247\u65f6\u4ee5\u8be5\u989c\u8272\u503c\u4f5c\u4e3a\u80cc\u666f\u8272\uff08\u8981\u6539\u4e00\u8d77\u6539\uff09\uff0cTransparentBit\u65b9\u6cd5\u5728\u5904\u7406\u65f6\u81ea\u52a8\u628a\u8fd9\u4e9b\u989c\u8272\u503c\u8fc7\u6ee4\u6389\uff0c\u770b\u8d77\u6765\u5c31\u662f\u900f\u660e\u7684\u3002<\/p>\n

\u7136\u540e\u7ed9Picture Control\u6307\u5b9a\u4e00\u4e2aID\uff0c\u5728\u5bf9\u8bdd\u6846\u7684.h\u6587\u4ef6\u4e2d\u5b9a\u4e49CTransparentPic\u5bf9\u8c61\uff1a
 CTransparentPic m_ctrlPic1;<\/p>\n

\u63a5\u7740\u5728\u5bf9\u8bdd\u6846.cpp\u6587\u4ef6\u7684DoDataExchange\u65b9\u6cd5CDialog::DoDataExchange\u4e4b\u540e\u52a0\u4e00\u9879\u5b8c\u6210\u5173\u8054\uff1a
 CDialog::DoDataExchange(pDX);
 DDX_Control(pDX, IDC_BITMAP1, m_ctrlPic1);<\/p>\n

\u6700\u540e\u5728\u5bf9\u8bdd\u6846\u7684OnInitDialog\u52a0\u4e00\u9879\u8bbe\u7f6e\u56fe\u7247ID\u9879\uff1a
 m_ctrlPic1.SetBitmapIndex(IDB_BITMAP1);<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728VC\u4e2d\u4f7f\u7528Picture Control\u6765\u653e\u7f6e\u56fe\u7247\u65f6\u60f3\u505a\u6210\u900f\u660e\u80cc\u666f\u7684\uff0c\u9009\u62e9Bitmap\u7c7b\u578b\u65f6\u662f\u56fe\u7247\u539f\u6837\u663e\u793a\u51fa […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[36],"class_list":["post-140","post","type-post","status-publish","format-standard","hentry","category-6","tag-cc"],"_links":{"self":[{"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/posts\/140","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/comments?post=140"}],"version-history":[{"count":0,"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/posts\/140\/revisions"}],"wp:attachment":[{"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/media?parent=140"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/categories?post=140"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lordong.xyz\/wp\/wp-json\/wp\/v2\/tags?post=140"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}