cdc attunity

m_pmainwnd = DLG; 5 // call before domodal (), set the dialog box to blue background, red text 6 setdialogbkcolor (RGB (255 ), RGB (255, 0, 0); 7 int nresponse = DLG. domodal (); 8 ...} Compile and run. The background color and text color of the dialog box have changed. It is worth noting that setdialogbkcolor must be called before domodal () is called, and this method will change the color of all the dialogs in the application and cannot target a specified dialog box. Method 2: Reload onpaint

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, initialize the brush to the desired background color in the class constructor.Cmyformview: cmyformview (){// Initialize background brush.M_brush. createsolidbrush (RGB (0, 0,255 ))}Finally, use classwizard to process the wm_ctlcolor message and retu

The GDI bitmap is just another GDI object, such as a pen or font. You must first create a bitmap and then select it into the device environment. After modifying an object, you must unselect it and delete it. Even so, there are still some problems because the "bitmap" of the display is actually the display surface image, and the "bitmap" of the printer device is the print page itself. Therefore, bitmap cannot be selected into the display device environment or printer device environment. You must

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 (CDC * PDC), write as follows:PDC-> moveTo (0, 0 );PDC-> lineto (100,100 );This drawing process should be very sim

button changes, the application framework needs to call this function to redraw the button. 6. Customize the following message processing: Afx_msg void OnMouseMove (UINT nFlags, CPoint point ); Afx_msg BOOL OnSetCursor (CWnd * pWnd, UINT nHitTest, UINT message ); Afx_msg void OnTimer (UINT nIDEvent ); Afx_msg void OnLButtonUp (UINT nFlags, CPoint point ); Afx_msg void OnLButtonDown (UINT nFlags, CPoint point ); Afx_msg int OnCreate (maid ); Afx_msg BOOL OnEraseBkgnd (

= cbitmap: fromhandle (BMP front );Cbitmap * pbmpbkground = cbitmap: fromhandle (BMP bkground ); CDC memdcfront;CDC memdcbkground;CDC memdcdest;BITMAP bmFront; CDC * pDc = GetDC (); MemDcFront. CreateCompatibleDC (pDc );MemDcDest. CreateCompatibleDC (pDc );MemDcBkGround. CreateCompatibleDC (pDc ); CBitmap * pOldBmpFro

analysis of the MFC program framework. Appwizard is a source code generation tool and a computer-aided programming tool. How is winmain hidden from the source program in the MFC program and how is theapp global variables allocated, the functions and relationships of several classes in the MFC framework, the generation and destruction of the window in the MFC framework, and the analysis of the precreatewidow and oncreate functions of the window class, the relationship between Windows and the cwn

Label: style ar use SP strong Div on art code There are many ways to draw the device context. For example, you can create a bitmap image brush and use it to fill an area to draw an image. In addition, the bitmap function of the CDC class can be used to output the bitmap to the device context. Bitblt is used to copy bitmap from the original device to the target device. The syntax format is as follows: Boolbitblt (int x, int y, int nwidth, int

. Void cdiscmeter: onpaint (){Cpaintdc DC (this); // device context for painting// Obtain the control areaGetclientrect ( m_rectctrl ); Cdiscmemdc memdc ( DC, m_rectctrl ); // Draw a dashboardIf (m_dcmeterplate.getsafehdc () = NULL | (m_bitmapmeterplate.m_hobject = NULL )){M_dcmeterplate.createcompatibledc ( DC );M_bitmapmeterplate.createcompatiblebitmap ( DC, m_rectctrl.width (), m_rectctrl.height ());M_pbitmapoldmeterplate = m_dcmeterplate.selectobject ( m_bitmapmeterplate );Drawmeterback

Derive a cbuttonex classReload oncreate to use the GDI + texture to the button IntCbuttonex: oncreate (maid) { If(Cbutton: oncreate (lpcreatestruct) =-1) Return-1; Crect RC; Getclientrect ( rc ); Cdc dc; UsingNamespaceGdiplus;// Required before using GDI + Graphics graph (getdc ()-> m_hdc ); Image image (L"E: \ image related \ my work \ gdi?button.png"); Graph. drawimage ( image, RC. right-rc.left, RC. b

". Windows creates it and allocates system resources to it. After an MFC window object is created in Windows, it is created by the create member function of the cwnd class. The "window handle" is saved in the m_hwnd member variable of the window object. Windows windows can be destroyed by a program or by user actions. (1) Data Structure comparison The MFC object is an example of the corresponding C ++ class, which is defined by the MFC or programmer; Windows Object is the internal structure of a

Functions: 1. Draw a colored line in an area of the dialog box. 2. When the window is overwritten and restored, the image is automatically re-painted. 3. Change the button color. Operation: Create a dialog box program according to the wizard. Add a static text box to the resource with the ID idc_static. Add the following content to dialogxxxdlg. h: Cbrush m_brush; // used for custom colorsCDC m_memdc; // memory DC compatible with screen DCCbitmap m_bmp; // bitmapCwnd * m_pdrawwnd; // Object Poin

Using TI's tm4c123g Launchpad Development Board, USB interface, to the same chip to burn write.We only use burn write that piece of function, do not have another chip development function, need jumper source project: from official website tm4c123g, download this board ofDrive, write program, Project。 Lmflashprogrammer.msi the program, drive and Project Sw-tm4c-2.0.1.11577.exe, tivaware_c_series-2.0.1.11577 project, examples\boards\ EK-TM4C123GXL for us to use the Chip project infrared screen sch