cdc morocco

*m_textbkimage; //The background picture of the word3. Define messages to prevent screen flickerafx_msg BOOL OnEraseBkgnd (CDC *PDC);afx_msg void Onitemexpanding (nmhdr* pnmhdr, lresult* pResult);afx_msg void onitemexpanded (nmhdr* pnmhdr, lresult* pResult);(ii) Initialization of defined variables in. cppM_treebkimage = new Cximage (); //Picture backgroundM_textbkimage = new Cximage (); //The background of the wordOn_wm_erasebkgnd ()On_notify_refl

Generally, programmers want their programs to be beautiful and generous. To meet this requirement, they want to do their best to beautify their programs. On the other hand, text is an indispensable way to transmit information on the program interface. It is a good choice to add and display texts with special effects in appropriate places on the interface, you can get twice the result with half the effort. This example describes how to achieve this goal by writing a simple small program to solve

by the drawing speed being too slow or the display graphics being too complex. In fact, this is not true. The influence of the display speed of the drawing on the flashing is not fundamental. For example, in ondraw (CDC * PDC), write as follows: PDC-> moveTo (0, 0 ); PDC-> lineto (100,100 ); This drawing process should be very simple and fast, but it will still flash when pulling the window changes. In fact, in principle, the more complex the proc

HDC, CDC, cclientdc, and cwindowdc Device descriptionThe device description table is a structure containing device information (physical devices such as monitors and printers). Image operations in MFC Require DC.HDC is a data type in windows and a device description handle;CDC is a class related to Windows devices encapsulated by MFC; Cclientdc is the classification class of

methods, the MD5 method is used to passively compare the full table data, resulting in poor performance. When a table does not have a primary key or a unique column and contains duplicate records, the accuracy of the MD5 method is poor. D. Log comparison: Analyze the logs of the database to determine the changed data. Oracle's Change Data Capture (CDC, changeddatacapture) technology is representative in this regard. The

)); ... } When you need to re-draw a dialog (or a sub-control of the dialog), Windows sends the message wm_ctlcolor to the dialog. Generally, you can ask windows to select a paint brush for the background or reset the specified brush for the message. The following example describes how to create a red background dialog. First, add the one-person member variable cbursh to the dialog base class: Class cmyformview: Public cformview { ... PRIVATE: Cbrush M _ brush; // background brush ... }; Second

; } Hfont font = createfont (int) height, width, 0, 0, Weight, italic, underline, strikeout, CharSet, Out_default_precis, Clip_default_precis, Proof_quality, Default_pitch | Ff_dontcare, face); return font; } Summary These are the common problems we encounter in implementing printing, and I believe we understand these, and it is no longer difficult to implement printing in our own programs. http://msdn.microsoft.com/zh-cn/library/cc485711 (vs.71). aspx#_core_printer_pages_vs.._docum

preview related functions in Cmyframewnd, for convenience, the default print and Print preview virtual function names are the same in the CView view class. But these functions are added as member functions, not overloads. The print and OnPrint functions are mainly introduced here. The print function is a printing control function that pops up the Print dialog box to get user settings information, such as printer, paper size, and so on. There is also a printer DC and set up DOCINFO structure, w

-*-import osdef cdwalker (CDROM, cdcfile): Export = "" For root, dirs, files in Os.walk (CDROM): #print (root, dirs, files) export + = "\%s;%s;%s"% (root, dirs, files) #print (export) Open (Cdcfile , ' W '). Write (export) cdwalker (' e:\\ ', ' CD1.CDC ') cdwalker (' e:\\ ', ' CD2.CDC ')Little White got the first Python function and successfully ran it two times, recording the contents of the same disc to 2

------------------------------------------------------------------------------------------- This article turns from : http://blog.csdn.net/xuyongbeijing2008/article/details/8063801 ------------------------------------------------------------------------------------------- Cdc::setmapmode virtual int setmapmode (int nmapmode ); Function Description: This function sets the mapping method for the specified device environment, which defines the unit of me

Cmytestview::ondraw (cdc* pDC) {cmytestdoc* PDoc = GetDocument (); Assert_valid (PDOC); if (!pdoc) return; TODO: Add native data hereAdd the drawing code/*cbitmap bitmap; Bitmap. LOADBITMAPW (Idb_me); *///Paint/*pdc->bitblt (100,50,50,60,memdc,0,0,srccopy); * */*point pt; pt.x=200; pt.y=200; CImageList ImageList; Imagelist.create (50,60,ilc_color24| ilc_mask,1,0); Imagelist.add (bitmap,rgb (0,0,0)); Imagelist.draw (pdc,0,pt,ild_transparent);

The big difference between the first call to Cdialog::onpaint () and the Last Call to Cdialog::onpaint () in the OnPaint () function is that if you do not pay attention to this problem there will be an unreasonable drawing problem-the effect is not coming out! After two hours of torture, the problem lies in the following lessons:the Cdialog::onpaint () function is called first in the OnPaint () function:[CPP]View PlainCopy Add a bitmap background to the main form client area void Cbackimag

alternately in a short period of time, making the display window appear flashing. If you set the background to null, the duplicate drawing will not flash. Of course, this will make the display of the window messy, because during the re-painting, there is no background color to clear the original drawing, and a new image is superimposed. Some people may say that the blinking is caused by the drawing speed being too slow or the display graphics being too complex. In fact, this is not true. The in

side to draw and display, so when displaying a frame of graphics, the slowdown is less flickering, so as to achieve smooth animation; and, graphics are directly displayed in the memory to the current form, so the speed is also very fast, so as to achieve high-speed animation. The following describes how to implement these technologies:1,Start VC ++ and create a single-document application supported by MFC.2,Select the menu item inertnew class to create a class inherited from the cbitmap class,

);Ctx_ddl.set_attribute ('mywordlist', 'prefix _ max_length ', 5 );Ctx_ddl.set_attribute ('mywordlist', 'substring _ Index', 'yes ');End;BeginCtx_ddl.create_preference ('cnlex ', 'Chinese _ lexer ');-- === Ctx_ddl.create_preference ('chinalex ', 'Chinese _ vgram_lexer') === ---;End; 3. ============ create an index ====================Create index name_index on CDC. Test (name)Indextype is ctxsys. ContextParameters ('datastore ctxsys. direct_datastore

limit to the above approach, because not all parent windows can accept this special WM_PAINT message feature, but MSDN mentions that most controls have this feature, and you should be careful to read its document content.Third: If the above methods are not, then the most stupid way, the GDI function to brush the background of the child window, but you need to know the parent window background color, background bitmap and other information. For example, to fill the background of a child window w

users often ask: "Why can't the WM_ERASEBKGND message in the dialog box be found in class wizard? Is this message unavailable in the dialog box "? In fact, the dialog box is also a window, and it also contains the WM_ERASEBKGND message, but it is filtered out by the dialog filter used by the MFC class wizard (only in the display of the message window, does not really do not respond to this message), in order to highlight the exclusive message and control events in the dialog box during code wri

First load an image with ID idb_bitmap2 In testdlg. h: Cbrush m_brbk; // defined in public In testdlg. cpp: Add the following to the oninitdialog () initialization function: Bool ctestdlg: oninitdialog () { Cdialog: oninitdialog (); Cbitmap BMP; BMP. loadbitmap (idb_bitmap2 ); M_brbk.createpatternbrush ( BMP ); BMP. deleteobject (); Return true; // return true unless you set the focus to a control } Open the Class Wizard and find the wm_ctlcolor message. The onctlcolor () function is reloaded

content, in this way, the background color and the display image appear alternately in a short period of time, making the display window appear flashing. If you set the background to null, the duplicate drawing will not flash. Of course, this will make the display of the window messy, because during the re-painting, there is no background color to clear the original drawing, and a new image is superimposed. Some people may say that the blinking is caused by the drawing speed being too slow or t

, the duplicate drawing will not flash.Of course, this will make the display of the window messy, because there is no background color for the originalThe drawn image is cleared, and the new image is superimposed.Some people may say that flashing is caused by the drawing speed being too slow or the graphics displayed are too complex,In fact, this is not true. The influence of the display speed of the drawing on the flicker is not fundamental.For example, in ondraw (