windows - masm assembly how to use getpixel to build a color picker -

-

i build color picker. have tried code

invoke getdc,null mov esi,eax invoke getpixel,esi,400,400 invoke lstrcpy,string ,eax invoke setdlgitemtext,hwin,textbox1,string invoke releasedc,null,esi

but returns p»© , things that. how return things 00f0f0f0h

you not trying format string number, need pass correct flags , specifier wsprintf. *printf format whatever pass it, , convert string according format specifier , put string address passed lpout.

the %s specifier formatting strings. lets wanted display return value of getpixel 8 digit hex number 0x in front of number.

.data szfmt       db  "%#08x", 0  .data? buf         db  12 dup (?)  .code     invoke  getdc, null     invoke  getpixel, eax, 200, 200      invoke  wsprintf, offset buf, offset szfmt, eax     invoke  messagebox, null, offset buf, null, mb_ok

instead of calling messagebox, can do:

invoke  setdlgitemtext, hwin, textbox1, offset buf

try , see messagebox displays

http://msdn.microsoft.com/en-us/library/windows/desktop/ms647550(v=vs.85).aspx


Comments

Post a Comment

Popular posts from this blog

java - Jmockit String final length method mocking Issue -

-
using jmockit 1.2 jar, trying mock string's length method getting unexpected invocation exception: failed: test java.lang.illegalstateexception: missing invocation mocked type @ point; please make sure such invocations appear after declaration of suitable mock field or parameter @ stringdemo.testa$1.<init>(testa.java:17) @ stringdemo.testa.test(testa.java:13) i using testng: @test public void test() throws exception { new expectations() { @mocked("length") string astring; { astring.length(); result = 2; } }; system.out.println(a.showa("test")); } } actual class a: public class { public static int showa(string str){ int a= str.length(); return a; } } this wrong way of recording expected results. shouldn't mock , record string's length() method, record showa() instead. here solution @suppresswarnings("unused...
Read more

asp.net - Razor Page Hosted on IIS 6 Fails Every Morning -

-
i have simple page in intranet uses razor/asp fetch single record table , display it, plus few graphic, dashboard display. meaning, no user intervention other first time open ie internal url. the problem having every morning ie displays "page not found or network error" message. refresh page, , it's stuck , doesn't display anything. try different pc, open ie internal url , it's stuck... ...until following: login server hosting page run inetmgr go web sites, etc right click on page that's giving me problem , select browse at moment, error message: server error in '/' application. -------------------------------------------------------------------------------- type of page not served. description: type of page have requested not served because has been explicitly forbidden. extension '.cshtml' may incorrect. please review url below , make sure spelled correctly. requested url: /application/dashboard.cshtml ---------------...
Read more

ios - Can NSManagedObject conform to NSCoding -

-
i need transfer single object across device. right converting nsmanagedobject dictionary , archiving , sending nsdata. upon receiving unarchiving it. transfer nsmanagedobject archiving , unarchiving instead of creating intermediate data object. @interface test : nsmanagedobject<nscoding> @property (nonatomic, retain) nsstring * title; @end @implementation test @dynamic title; - (id)initwithcoder:(nscoder *)coder { self = [super init]; if (self) { self.title = [coder decodeobjectforkey:@"title"]; //<crash } return self; } - (void)encodewithcoder:(nscoder *)coder { [coder encodeobject:self.title forkey:@"title"]; } @end nsdata *archivedobjects = [nskeyedarchiver archiveddatawithrootobject:testobj]; nsdata *objectsdata = archivedobjects; if ([objectsdata length] > 0) { nsarray *objects = [nskeyedunarchiver unarchiveobjectwithdata:objectsdata]; } the problem above code is. crashes @ self.title in initwithcoder sa...
Read more