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Android processes large images

); BitmapFactory.Options optsDownSample = new BitmapFactory.Options(); optsDownSample.inSampleSize = getClosestResampleSize(bfo.outWidth, bfo.outHeight, maxDim); Bitmap bmpt = BitmapFactory.decodeFile(path, optsDownSample); Matrix m = new Matrix(); if (bmpt.getWidth() > maxDim || bmpt.getHeight() > maxDim) { BitmapFactory.Options optsScale = getResampling(bmpt.getWidth(), bmpt.getHeight(), maxDim); m.postScale((float)

How to Develop an operating system using C language

; Copyright (c) 2004, Tian xiangyuan ; . Model tiny, c . 386 P Option expr32 Option Casemap: None Sysseg equ 1000 h Sysoff equ 0100 H . Code Org 7c00h _ Start: JMP begin NOP DB 'bootsecret', 0; magic Pack_size dB 16 Db 0; reserved DW 60; Sectors DW sysoff; buf_addr_off DW sysseg; buf_addr_seg DD 2; sector_from Dd 0; sector_from_high Begin: CLI MoV ax, CS MoV ds, ax MoV es, ax MoV SS, ax MoV sp, 0 ffffh STI MoV CX, msg_load_len; Length Lea bp, msg_

C + + keyword static Register const volatile extern

; *value immutable, value variable int* const value; Value is immutable, *value variable const (int *) value;    (int *) is a type,value immutable, *value variable//logically understood so that compilation cannot be passed and requires TypeDef int* NEWTYPE; The const int* Const Value;//*value,value is immutable to give a const pointer to a non-const object, so it cannot be changed. However, Const cannot be assigned to non-const unless cast first, const int x=100; int *p= (int*) x; *p++; Class

Android apps Add (create) and delete and determine if desktop shortcuts exist

Android app Add (create) and delete and determine if there is a desktop shortcut-android novice-eoe Mobile Developer Forum-Powered by discuz! The Android Desktop program provides the ability to add and remove desktop shortcuts and determine if a shortcut exists.Just pass in the shortcut title, icon, and click on the shortcut to execute the app intent. The code is as follows: 1. Add desktop shortcuts to Android /*** Add desktop shortcuts to the current app** @param

Introduction to old technology, new learning, and API hook MessageBox-JMP Instruction usage is also collected

that in C, Java, or C #, there will always be one or another condition judgment, so how does one perform conditional jump in the assembly? 1. The jcxz command jcxz is a conditional transfer instruction. All conditional transfer instructions are short transfer instructions. The corresponding machine code contains the transfer displacement, not the target address. The IP address ranges from-128 ~ 127. Command Format: jcxz label (If (CX) = 0, it is tran

Wang Shuang assembly language experiment 10 2. Numerical Display

Assume Cs: codedata segment dB 10 DUP (0) Data endscode segmentstart: mov ax, 13666 mov BX, data mov ds, BX mov Si, 0 call DTOC mov DH, 8 mov DL, 3 mov Cl, 2 call show_str mov ax, 4c00h int 21 h DTOC: Push dx push ds push Si push cx push ax push di mov Di, 0 mov BX, 10 mov Si, 0 pushnumber:; press data into the stack (otherwise the display order is reversed) mov dx, 0; DX must be assigned 0 each time; otherwise, the Division is incorrect Div BX add DL

Winmain/unreferenced_parameter/hpreinstance

about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them:int SomeFunction(int arg1, int arg2){ return arg1+5;}When using/W4, the compiler complains:“warning C4100: ''arg2'' : unreferenced formal parameter.”To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2.

3026 Borg maze BFS + prim

[x] [x]; Bool use [x] [X], visit [x]; Struct node // struct, which records the coordinates in the queue and the number of moved steps { Int X, Y, step; }; Bool check (int x, int y) // check whether it is out of bounds { If (x Return false; Return true; } Void BFS (int x, int y) { Memset (use, false, sizeof (use )); Node cur; Cur. x = X; Cur. Y = y; Cur. Step = 0; Queue Q. Push (cur ); Use [x] [Y] = true; Int C

Use of unreferenced_parameter

, ). Suppose you have a function that brings two parameters, but you only use one of them: Int somefunction (INT arg1, int arg2) {return arg1 + 5 ;} When using/W4, the compiler complains: "Warning c4100: ''arg2'': unreferenced formal parameter ." To cheat the compiler, you can add unreferenced_parameter (arg2 ). Now the compiler will shut down when compiling your function that references arg2. And because of the statement: Arg2; In fact, the compiler will not generate any code for it

The listctrl control automatically adapts to the window size.

Format 1: Used in a single document window or manually created listctrl Void ctrade_misview: onsize (uint ntype, int CX, int CY){Cview: onsize (ntype, CX, CY );// Todo: add your message handler code hereIf (m_listctrl) // m_listctrl is the Instance Object of listctrl.{Crect rect;Getclientrect (rect); // directly obtain the user area rectRect. Top + = 30; // here is the setting 30 pixels from the topM_listct

Role of unreferenced_parameter

their code.The problem is that level 4 really pays too much attention to the details. on Level 4, the compiler will complain about anything that does not reference a parameter (unless you are really interested in using this parameter, ). Suppose you have a function that brings two parameters, but you only use one of them: int SomeFunction(int arg1, int arg2){ return arg1+5;} When using/W4, the compiler complains: “warning C4100: ''arg2'' : unreferenced formal parameter.” To cheat the compiler,

Bug solution for loading LoadImage to system OEM Images

important parts abve are:1. The code at 77D55E9D. Which copies the address of the bmp file stringInto ecx. 2. The code at 77D55EA8. This checks if the hinst parameter passedLoadImage is NULL. If we jump to the code at address 77D57C6E becuase of thisLine: 77D55EB0 je _ LoadBmp @ 20 + 21 h (77D57C6Eh); If esi was NULL jumpsTo code at 77D57C6E This takes us to this assembly: 77D57C6E mov esi, dword ptr [_ hmodUser (77da01_h)]77D57C74 movzx eax, cx77D57C77 xor ebx, ebx77D57C79 sub eax, 7 FDCh77D57

J2's simple drawing example

;Private Boolean araseflag = false;Private Boolean isfirstpaint;Private int SX = 0, Sy = 0, Cx = 0, Cy = 0;Private pointexample point;Public myclass (pointexample point ){This. Point = point;Exit = new command ("exit", command. Exit, 1 );Arase = new command ("arase", command. screen, 1 );This. addcommand (exit );This. addcommand (arase );This. setcommandlistener (this );Isfirstpaint = true;}Public void commandaction (command C, displayable d ){If (C =

Python Sqlite3 database operations

1. Connect to the database: Cx = sqlite3.connect ('database. db'). cx is a database connection object and has the following operations: Commit () -- transaction commit Rollback () -- transaction rollback Close () -- close a database connection Cursor () -- create a cursor 2. Obtain the cursor object: All SQL statements must be executed under the cursor object. cu = cx

Keep the form at the beginning of the Method

Keep the form at the beginning You can use the setwindowpos function to set the position and status of a window. In this example, you can use this function to place a form on all forms so that it is always at the beginning. Let's take a look at the definition and parameters of the setwindowpos function: Before using the API function, you must first Program The statement is as follows: Private declare function setwindowpos lib "USER32" (byval hwnd as long, byval hwndinsertafter

Draw a star with the mouse

Int g ____ times = 0; double G ____ X1, G ____ Y1, G ____ X2, G ____ Y2; # definepi (3.14159) void drawfive (cclientdc * DC) {DC-> ellipse (G ____ x2-2, G ____ Y2-2, G ____ X2 + 2, G ____ y2 + 2); // P1, the center of P2 is double tx1, ty1; tx1 = (G ____ X1 + G ____ x2)/2; ty1 = (G ____ Y1 + G ____ Y2)/2; // dc-> ellipse (tx1-2, ty1-2, tx1 + 2, ty1 + 2); // dc-> moveTo (G ____ X1, G ____ Y1 ); // dc-> lineto (G ____ X2, G ____ Y2); // calculates the angle of P1 and P2, double angle; angle = (G _

SetWindowPos usage of MFC

Transferred from: http://hi.baidu.com/max_new/blog/item/e2bbe607b1f127c57b8947c0.htmlMany software, especially the desktop area is not very large software, usually provides a regular top-of-the-box features (perhaps the software is not so called, but the role is the same), its role is to keep the window is always on top of other windows, you can eliminate the frequent switch window action.If you want to do this, there is an API that can be implemented: SetWindowPos, the declaration is this:Priva

Using JavaScript + canvas for image cropping _ jquery-js tutorial

[0]. pageY;IMouseX = Math. floor (pageX-canvasOffset. left );IMouseY = Math. floor (pageY-canvasOffset. top );Canvas.css ("cursor", "default ");If (selectObj. bDragAll ){Canvas.css ("cursor", "move ");Canvas. data ("drag", true );Var cx = iMouseX-selectObj. px;Cx = cx Mx = ctx. canvas. width-selectObj. w;Cx =

SurfaceView and Canvas are combined to achieve simple graphic rendering and animation effects.

. l0904_collection; import java. util. timer; import java. util. timerTask; import android. content. context; import android. graphics. canvas; import android. graphics. color; import android. graphics. paint; import android. view. surfaceHolder; import android. view. surfaceView; public class MySurfaceView extends SurfaceView implements SurfaceHolder. callback {private Paint paint = new Paint (); private Timer timer; private TimerTask task; private Bolls bolls; public MySurfaceView (Context con

Lightoj-1305-area of a parallelogram (geometry)

1305-area of a parallelogramPDF (中文版) statisticsforumTime Limit:1 second (s) Memory limit:32 MBA parallelogram is a quadrilateral with the pairs of parallel sides. See the picture below:Fig:a ParallelogramNow is given the co ordinates of A, B and C, you have to find the coordinates of D and the area of the parallelogram. The orientation of ABCD should is same as in the picture.InputInput starts with an integer T (≤1000), denoting the number of test cases.Each case starts with a line containing s

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