1、隐藏鼠标
int i = ShowCursor(FALSE);
for ( i; i >= 0 ;i-- )
{
ShowCursor(FALSE);
}
2、显示鼠标
int i = ShowCursor(TRUE);
for ( i;i<= 0;i++ )
{
ShowCursor(TRUE);
}
3、在Picture Control上显示图片
（1）先写一个类
//.h
#pragma once
using namespace Gdiplus;
#pragma comment(lib, "gdiplus.lib")
// CImagePrieviewStatic
class CImagePreviewStatic : public CStatic
{
DECLARE_DYNAMIC(CImagePreviewStatic)
public:
CImagePreviewStatic();
virtual ~CImagePreviewStatic();
virtual BOOL Create();
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
void SetFilename(LPCTSTR szFilename);
protected:
WCHAR m_wsFilename[_MAX_PATH];
Image *m_img;
Graphics *m_graphics;
DECLARE_MESSAGE_MAP()
};
//.cpp
#include "stdafx.h"
#include "ImagePreviewStatic.h"
// CImagePrieviewStatic
IMPLEMENT_DYNAMIC(CImagePreviewStatic, CStatic)
CImagePreviewStatic::CImagePreviewStatic() : CStatic()
{
m_img = (Image *) NULL;
m_graphics = (Graphics *) NULL;
}
CImagePreviewStatic::~CImagePreviewStatic()
{
//modified by yangjiaxun @ 200701226
if( m_img )
delete m_img;
if( m_graphics )
delete m_graphics;
}
BOOL CImagePreviewStatic::Create()
{
if (GetSafeHwnd() != HWND(NULL))
{
if (m_img != NULL)
{
delete m_img;
m_img = (Image *) NULL;
}
if (m_graphics != NULL)
{
delete m_graphics;
m_graphics = (Graphics *) NULL;
}
m_img = new Image(m_wsFilename);
m_graphics = new Graphics(GetSafeHwnd());
return TRUE;
}
return FALSE;
}
void CImagePreviewStatic::SetFilename(LPCTSTR szFilename)
{
#ifndef _UNICODE
USES_CONVERSION;
#endif
ASSERT(szFilename);
ASSERT(AfxIsValidString(szFilename));
TRACE("%s\n", szFilename);
#ifndef _UNICODE
wcscpy(m_wsFilename, A2W(szFilename));
#else
wcscpy_s(m_wsFilename, szFilename);
#endif
delete m_img;
m_img = new Image(m_wsFilename, FALSE);
Invalidate();
}
void CImagePreviewStatic::DrawItem(LPDRAWITEMSTRUCT /*lpDrawItemStruct*/)
{
Unit units;
CRect rect;
if (m_img != NULL)
{
GetClientRect(&rect);
RectF destRect(REAL(rect.left), REAL(rect.top), REAL(rect.Width()), REAL(rect.Height())),
srcRect;
m_img->GetBounds(&srcRect, &units);
m_graphics->DrawImage(m_img, destRect, srcRect.X, srcRect.Y, srcRect.Width, srcRect.Height, UnitPixel, NULL);
}
}
BEGIN_MESSAGE_MAP(CImagePreviewStatic, CStatic)
END_MESSAGE_MAP()
//在另外的.cpp中进行调用
为该Picture Control添加控件变量 CImagePreviewStatic m_adPic;
m_adPic.Create();
m_adPic.SetFilename(theApp.g_szDefaultADPic);
4、根据屏幕分辨率改变窗体控件的大小
void xx::StretchControl(UINT uID)
{
CRect rcControl;
CRect rcFrame;
GetDlgItem( IDC_FRAME )->GetWindowRect( rcFrame );
ScreenToClient( rcFrame );
GetDlgItem( uID )->GetWindowRect( rcControl );
ScreenToClient( rcControl );
long topRate, leftRate, heightRate, widthRate;
topRate = rcControl.top * GetSystemMetrics( SM_CYSCREEN ) / rcFrame.Height();
leftRate = rcControl.left * GetSystemMetrics( SM_CXSCREEN ) / rcFrame.Width();
heightRate = rcControl.Height() * GetSystemMetrics( SM_CYSCREEN ) / rcFrame.Height();
widthRate = rcControl.Width() * GetSystemMetrics( SM_CXSCREEN ) / rcFrame.Width();
GetDlgItem( uID )->MoveWindow( leftRate, topRate, widthRate, heightRate );
Invalidate();
}
void xx::ShiftControl(UINT uID)
{
CRect rcControl;
CRect rcFrame;
GetDlgItem( IDC_FRAME )->GetWindowRect( rcFrame );
ScreenToClient( rcFrame );
GetDlgItem( uID )->GetWindowRect( rcControl );
ScreenToClient( rcControl );
long topRate, leftRate;
topRate = rcControl.top * GetSystemMetrics( SM_CYSCREEN ) / rcFrame.Height();
leftRate = rcControl.left * GetSystemMetrics( SM_CXSCREEN ) / rcFrame.Width();
GetDlgItem( uID )->MoveWindow( leftRate, topRate, rcControl.Width(), rcControl.Height() );
Invalidate();
}
5、在listctrl中显示图片
（1）addpicture
void xx::addPicture(void)
{
// TODO: Add your control notification handler code here
UpdateData(TRUE);
// validate image directory
// show hour glass cursor
BeginWaitCursor();
// get the names of bitmap files
if ( !GetImageFileNames() )
{
LOG_OUTPUT_WARN(_T("image目录下没有图片。"));
EndWaitCursor();
return;
}
// draw thumbnail images in list control
drawPicture();
// set focus and select the first thumbnail in the list control
//m_ctrList.SetFocus();
m_ctrList.SetItemState(0, LVIS_SELECTED|LVIS_FOCUSED, LVIS_SELECTED|LVIS_FOCUSED);
CRect crt;
int x = 95;
int y = 120;
m_ctrList.GetClientRect(&crt);
x = (crt.Width() - 20)/3;
y = crt.Height()/3;
m_ctrList.SetIconSpacing(x,y);
EndWaitCursor();
}
（2）GetImageFileNames
BOOL xx::GetImageFileNames()
{
CString strExt;
CString strName;
CString strPattern;
BOOL bRC = TRUE;
HANDLE hFind = NULL;
WIN32_FIND_DATA FindFileData;
std::vector<CString> VectorImageNames;
if ( theApp.g_szPicFilePath[theApp.g_szPicFilePath.GetLength() - 1] == TCHAR(''\\'') )
strPattern.Format( TEXT("%s*.*"), theApp.g_szPicFilePath );
else
strPattern.Format( TEXT("%s\\*.*"), theApp.g_szPicFilePath );
hFind = ::FindFirstFile(strPattern, &FindFileData); // strat search
if (hFind == INVALID_HANDLE_VALUE)
{
LPVOID msg;
::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&msg,
0,
NULL);
// MessageBox((LPTSTR)msg, CString((LPCSTR)IDS_TITLE), MB_OK|MB_ICONSTOP);
::LocalFree(msg);
return FALSE;
}
// filter off the system files and directories
if (!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_TEMPORARY))
{
// test file extension
strName = FindFileData.cFileName;
strExt = strName.Right(3);
if ( strExt.CompareNoCase( TEXT("jpg") ) == 0 )
{
// save the image file name
VectorImageNames.push_back(strName);
}
}
// loop through to add all of them to our vector
while (bRC)
{
bRC = ::FindNextFile(hFind, &FindFileData);
if (bRC)
{
// filter off the system files and directories
if (!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_SYSTEM) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_HIDDEN) &&
!(FindFileData.dwFileAttributes & FILE_ATTRIBUTE_TEMPORARY))
{
// test file extension
strName = FindFileData.cFileName;
strExt = strName.Right(3);
if ( strExt.CompareNoCase( TEXT("jpg") ) == 0)
{
// save the image file name
//strName = theApp.g_szPicFilePath + strName;
VectorImageNames.push_back(strName);
}
}
}
else
{
DWORD err = ::GetLastError();
if (err != ERROR_NO_MORE_FILES)
{
LPVOID msg;
::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
NULL, err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR)&msg, 0, NULL);
//MessageBox((LPTSTR)msg, CString((LPCSTR)IDS_TITLE), MB_OK|MB_ICONSTOP);
::LocalFree(msg);
::FindClose(hFind);
return FALSE;
}
}
} // end of while loop
// close the search handle
::FindClose(hFind);
// update the names, if any
if ( !VectorImageNames.empty() )
{
// reset the image name vector
m_VectorImageNames.clear();
m_VectorImageNames = VectorImageNames;
return TRUE;
}
return FALSE;
}
（3）drawPicture
void xx::drawPicture()
{
CBitmap* pImage = NULL;
HBITMAP hBmp = NULL;
POINT pt;
CString strPath;
int i;
// no images
if (m_VectorImageNames.empty())
return;
// set the length of the space between thumbnails
// you can also calculate and set it based on the length of your list control
int nGap = 6;
// reset our image list
for (i = 0; i<m_ImageListThumb.GetImageCount(); i++)
m_ImageListThumb.Remove(i);
// remove all items from list view
if (m_ctrList.GetItemCount() != 0)
m_ctrList.DeleteAllItems();
//add 20070809
// set the size of the image list
utility uClass;
int m_iSid;
m_iSid = theApp.getSidByMenuSname(theApp.m_strMenuSname);
if (m_iSid == -1)
{
return;
}
theApp.m_menuInfoVec = uClass.getMenuInfoBySid(m_iSid);
m_ImageListThumb.SetImageCount((UINT)theApp.m_menuInfoVec.size());//--modify 20070809
i = 0;
CRect crt;
int iWidth = 95;
int iHeight = 120;
m_ctrList.GetClientRect(&crt);
iWidth = (crt.Width() - 20)/3;
iHeight = (crt.Height() - 20)/3 - 15;
for (UINT k = 0;k < (UINT)theApp.m_menuInfoVec.size();k++)
{
CString strMid;
CString strJpg = _T(".jpg");
CString strMj;
strMid.Format(L"%d",theApp.m_menuInfoVec[k].Mid);
strMj = strMid + strJpg;
std::vector<CString>::iterator iter;
iter = find(m_VectorImageNames.begin(),m_VectorImageNames.end(),strMj);
if(iter == m_VectorImageNames.end())
{
// load the bitmap
strPath.Format( TEXT("%s\\%s"), theApp.g_szPicFilePath, _T("default.jpg") );
USES_CONVERSION;
//Bitmap img( A2W(strPath) );
Bitmap img( strPath);
//Bitmap* pThumbnail = static_cast<Bitmap*>(img.GetThumbnailImage(100, 75, NULL, NULL));
Bitmap* pThumbnail = static_cast<Bitmap*>(img.GetThumbnailImage(iWidth, iHeight, NULL, NULL));
// attach the thumbnail bitmap handle to an CBitmap object
pThumbnail->GetHBITMAP(NULL, &hBmp);
pImage = new CBitmap();
pImage->Attach(hBmp);
// add bitmap to our image list
m_ImageListThumb.Replace(k, pImage, NULL);
// put item to display
// set the image file name as item text
//m_ctrList.InsertItem(i, m_VectorImageNames[i], i);
CString strXS = _T("");
CString strMname = theApp.m_menuInfoVec[k].Mname;
CString strMprice = theApp.m_menuInfoVec[k].Mprice;
CString strMmeasure = theApp.m_menuInfoVec[k].Mmeasure;
LPCTSTR strTemp = LPCTSTR(strMname);
strMname = strTemp;
strTemp = LPCTSTR(strMprice);
strMprice = strTemp;
strTemp = LPCTSTR(strMmeasure);
strMmeasure = strTemp;
strXS = (strMname + _T("\n") + _T("(") + strMprice + _T("/") + strMmeasure + _T(")"));
m_ctrList.InsertItem(k,strXS,k);
// get current item position
m_ctrList.GetItemPosition(k, &pt);
// shift the thumbnail to desired position
pt.x = nGap + k*(75 + nGap);
//m_ctrList.SetItemPosition(k, pt);//delete by wupeng 2007.08.15 for reslove picture''s positon
//i++;
delete pImage;
delete pThumbnail;
}
else{
// load the bitmap
strPath.Format( TEXT("%s\\%s"), theApp.g_szPicFilePath,*iter );
USES_CONVERSION;
//Bitmap img( A2W(strPath) );
Bitmap img( strPath);
//Bitmap* pThumbnail = static_cast<Bitmap*>(img.GetThumbnailImage(100, 75, NULL, NULL));
Bitmap* pThumbnail = static_cast<Bitmap*>(img.GetThumbnailImage(iWidth, iHeight, NULL, NULL));
// attach the thumbnail bitmap handle to an CBitmap object
pThumbnail->GetHBITMAP(NULL, &hBmp);
pImage = new CBitmap();
pImage->Attach(hBmp);
// add bitmap to our image list
m_ImageListThumb.Replace(k, pImage, NULL);
// put item to display
// set the image file name as item text
//m_ctrList.InsertItem(i, m_VectorImageNames[i], i);
CString strXS = _T("");
CString strMname = theApp.m_menuInfoVec[k].Mname;
CString strMprice = theApp.m_menuInfoVec[k].Mprice;
CString strMmeasure = theApp.m_menuInfoVec[k].Mmeasure;
LPCTSTR strTemp = LPCTSTR(strMname);
strMname = strTemp;
strTemp = LPCTSTR(strMprice);
strMprice = strTemp;
strTemp = LPCTSTR(strMmeasure);
strMmeasure = strTemp;
strXS = (strMname + _T("\n") + _T("(") + strMprice + _T("/") + strMmeasure + _T(")"));
m_ctrList.InsertItem(k,strXS,
k);
// get current item position
m_ctrList.GetItemPosition(k, &pt);
// shift the thumbnail to desired position
pt.x = nGap + k*(75 + nGap);
//m_ctrList.SetItemPosition(k, pt);
/*i++;*/
delete pImage;
delete pThumbnail;
}
}
//end add
// let''s show the new thumbnails
m_ctrList.SetRedraw();
}