131 lines
2.5 KiB
C++
131 lines
2.5 KiB
C++
// Form2.cpp : implementation file
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//
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#include "stdafx.h"
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#include "DN_sample.h"
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#include "Form2.h"
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// CForm2 dialog
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IMPLEMENT_DYNAMIC(CForm2, CDialog)
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CForm2::CForm2(CWnd* pParent /*=NULL*/)
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: CDialog(CForm2::IDD, pParent),hb(0)
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, m_img(nullptr)
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, m_type(0)
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{
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Create(IDD,pParent);
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}
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CForm2::~CForm2()
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{
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}
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void CForm2::DoDataExchange(CDataExchange* pDX)
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{
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CDialog::DoDataExchange(pDX);
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//DDX_Control(pDX, IDC_LIST1, m_listbox);
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}
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BEGIN_MESSAGE_MAP(CForm2, CDialog)
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ON_WM_PAINT()
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//ON_LBN_SELCHANGE(IDC_LIST1, &CForm2::OnLbnSelchangeList1)
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END_MESSAGE_MAP()
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BOOL CForm2::OnInitDialog()
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{
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CDialog::OnInitDialog();
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ModifyStyle(WS_CAPTION, 0);
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return true;
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}
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// CForm2 message handlers
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void CForm2::OnPaint()
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{
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//CDialog::OnPaint();
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ShowImage();
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CPaintDC dc(this); // device context for painting
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// 绘制边界线
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CRect rectClient;
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GetClientRect(&rectClient);
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dc.DrawEdge(rectClient, EDGE_ETCHED, BF_RECT);
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}
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void CForm2::ShowOriginImg(MicroImage* img) {
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m_img = img;
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m_type = 0;
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ShowImage();
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}
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void CForm2::ShowCalImg(MicroImage* img) {
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m_img = img;
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m_type = 1;
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ShowImage();
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}
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void CForm2::ShowImage() {
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if (m_type > 1 || !m_img) return;
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if (m_type == 0 && !m_img->m_OriginData) return;
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if (m_type == 1 && !m_img->m_CalData) return;
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if (!hb) {
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BITMAPINFOHEADER bih = { 0 };
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bih.biSize = sizeof(BITMAPINFOHEADER);
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bih.biWidth = m_img->m_width;
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bih.biHeight = -m_img->m_height; // 负数表示图像是顶部向下的
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bih.biPlanes = 1;
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bih.biBitCount = 24; // RGB
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bih.biCompression = BI_RGB;
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bih.biSizeImage = m_img->m_width * m_img->m_height * 3; // 每个像素3字节
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// 分配内存给BITMAPINFO
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BITMAPINFO* bmi = (BITMAPINFO*)malloc(sizeof(BITMAPINFOHEADER) + sizeof(RGBQUAD) * 256); // 假设有256种颜色，但对于24位RGB不需要RGBQUAD数组
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memcpy(&bmi->bmiHeader, &bih, sizeof(BITMAPINFOHEADER));
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CDC* pDC = GetDC();
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uchar* data = (m_type == 0) ? m_img->m_OriginData : m_img->m_CalData;
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hb = CreateDIBitmap(pDC->m_hDC, &bih, CBM_INIT, data, bmi, DIB_RGB_COLORS);
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pDC->Detach();
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ReleaseDC(pDC);
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free(bmi);
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}
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GetClientRect(&r1);
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CPaintDC dc(this);
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BITMAP b;
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GetObject(hb, sizeof(b), &b);
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CDC cdc;
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cdc.CreateCompatibleDC(0);
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HGDIOBJ o = cdc.SelectObject(hb);
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SetStretchBltMode(dc, STRETCH_HALFTONE);
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dc.StretchBlt(0, 0, r1.right - r1.left, r1.bottom - r1.top, &cdc, 0, 0, b.bmWidth, b.bmHeight, SRCCOPY);
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cdc.SelectObject(o);
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cdc.DeleteDC();
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ReleaseDC(&cdc);
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}
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void CForm2::ClearImg() {
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if (hb != NULL) {
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DeleteObject(hb);
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hb = NULL;
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}
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} |