C / C++ / MFC

moving bitmap using Cbitmap and CDC

15-Oct-08 3:40

See here. Use of an edit control is optional.

You may also want to look at SetFilePointer() followed by SetEndOfFile().

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Arif Liminto14-Oct-08 18:32

Arif Liminto

14-Oct-08 18:32

Hi,

I got some difficulity how to move bitmap image in my application

basically, the algorithm is like this,

I've got CDC as m_MapDC and it already being created and DrawPoint basically use for draw truck in the mapDC but the result is there is no truck in the map
However, If I use CPen class instead of using CBitmap, I can see the line is moving from one point to other point. Any body have suggestions

void Ctrainc::DrawPoint()
{
CBitmap btruck;
CBitmap *pbtruck = NULL;

pbtruck = (CBitmap*)m_MapDC.selectObject(&btruck);

m_MapDC.MoveTo(m_PrevTruckPoint.m_iX,m_PrevTruckPoint.m_iY);
//move to the new pos
m_MapDC.LineTo(m_CurrTruckPoint.m_iX,m_CurrTruckPoint.m_iY);
m_MapDC.SelectObject(pOrbtruck);

btruck.DeleteObject();
}

Regards,

Arif Liminto

Re: moving bitmap using Cbitmap and CDC

CPallini14-Oct-08 22:45

CPallini

14-Oct-08 22:45

To draw a bitmap on (x,y) position you need to:

(1) Create a memory DC, via CDC::CreateCompatibleDC.
(2) Select the bitmap into the memory DC.
(3) Use the CDC::BitBlt method.

See here [^] for a code sample.
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Microsoft Visual C++: 10 Is the New 6

Jack Puppy14-Oct-08 13:07

Jack Puppy

14-Oct-08 13:07

From the vc++ blog:

Get more done. The next version of Visual C++ is all about improving developer productivity for large-scale applications. Learn about the IntelliSense and browsing experiences, changes to the project and build system, project-less browsing, collaboration through remote symbol indexing, and custom visualization of symbolic information.

...

Yes, "10 Is The New 6" refers to the IDE, not to the compiler and libraries. The compiler and libraries have steadily improved from VC6 to VC7.0 to VC7.1 to VC8 to VC9 (to VC9 SP1, with TR1 and MFC goodies!), and I like to say that "10 Is Greater Than 9".

After PDC, we'll have VCBlog posts explaining the new compiler and library features in great detail.

So a return to a more v6-like IDE, which everyone seemed to love. Too bad it's taken 7-8 years to get there.

Help with my code

dtaylor0114-Oct-08 11:55

14-Oct-08 11:55

Can someone take a look at my code. I'm having some errors and do not know how to correct. Not looking for someone to give me the answer, but walk me though to better understand.
This is a compiler to compute wages.

#include "stdafx.h"
#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[ ])
{

int a = 40; //No. of hrs worked during week
float b = 12.75; //Pay rate: dollars per hour
float c = 510;
cout << a * b;
cout << c;

//Weekly wages

// read in the hours worked

cout << endl;
cout << "Number of hours worked during the week (integer) = ";
cin >> hours_worked;

// read in the pay rate

cout << "Hourly pay rate (specify two digits after the decimal point) = ";
cin >> pay_rate;

// compute wages

sum = (number of hours * pay rate);

// display the result

cout << endl;
cout << "The weekly wages are: $" << wages << endl;

return (0); // terminate with success

}

jeron114-Oct-08 12:02

jeron1

14-Oct-08 12:02

Exactly what errors?
Please use code tags.

dtaylor0114-Oct-08 12:08

14-Oct-08 12:08

Here are the errors.

1>assignment 3.cpp
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(38) : error C2065: 'hours_worked' : undeclared identifier
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(43) : error C2065: 'pay_rate' : undeclared identifier
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(47) : error C2065: 'sum' : undeclared identifier
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(47) : error C2065: 'number' : undeclared identifier
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(47) : error C2146: syntax error : missing ')' before identifier 'of'
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(47) : error C2059: syntax error : ')'
1>c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(52) : error C2065: 'wages' : undeclared identifier
1>Build log was saved at "file://c:\Documents and Settings\Chuckie Taylor\My Documents\C++ Assignments\Assignments 3\assignment 3\assignment 3\Debug\BuildLog.htm"
1>assignment 3 - 7 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

jeron114-Oct-08 13:01

jeron1

14-Oct-08 13:01

dtaylor01 wrote:
error C2065: 'hours_worked' : undeclared identifier

Start with the first one, this says you are using a variable 'hours_worked' but haven't declared what type it is. The compiler doesn't know what it is, an int, float..? You have to specify this before you use the variable (or when you use it).

dtaylor0114-Oct-08 13:57

14-Oct-08 13:57

Ok i'm down to one error

>;assignment 3.cpp
1>;c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(50) : error C2143: syntax error : missing ';' before '<<'
1>;Build log was saved at "file://c:\Documents and Settings\Chuckie Taylor\My Documents\C++ Assignments\Assignments 3\assignment 3\assignment 3\Debug\BuildLog.htm"
1>;assignment 3 - 1 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

jeron114-Oct-08 16:24

jeron1

14-Oct-08 16:24

Post what you have so far.

David Crow15-Oct-08 3:48

15-Oct-08 3:48

dtaylor01 wrote:
1>;c:\documents and settings\chuckie taylor\my documents\c++ assignments\assignments 3\assignment 3\assignment 3\assignment 3.cpp(50) : error C2143: syntax error : missing ';' before '<<'

The code you've shown does not have 50 lines so we can't possibly know what exactly is causing the problem. Look at lines 49 and 50 to see if anything is missing.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

dtaylor0114-Oct-08 12:55

New MFC Functionality by BCG Soft (VS2008 Feature Pack).

14-Oct-08 12:55

<this my="" be="" a="" dumb="" but="" code="" tag="" is="" when="" you="" use=""> symbol in your work right? >

trouble using dll

gargeug14-Oct-08 10:55

gargeug

14-Oct-08 10:55

Sorry for reposting, but I'm hoping to post the question better. I am using Visual Studio 2008, trying to use a vendor supplied dll. I was given the .h, .lib, and .dll files. In the project, I #include "header", link the .lib file to the project, and physically place the .lib and .dll files in the search path. Here is the gist of the header file.

#ifndef __GP3_HEADER_AWC
#define __GP3_HEADER_AWC

extern "C" {
__declspec(dllimport) HANDLE __stdcall GP3OpenCom(int port);
__declspec(dllimport) void __stdcall GP3CloseCom(HANDLE);
__declspec(dllimport) void __stdcall GP3SetLED(HANDLE h,BOOL state);
...}
#endif

But when I try to build it, I get alot of errors thrown at me. Here is a collection of the first few errors.

1>Compiling...
1>main.cpp
1>c:\documents and settings\administrator\my documents\geno\programs\gp3\gp3\gp3.h(5) : error C2143: syntax error : missing ';' before '__stdcall'
1>c:\documents and settings\administrator\my documents\geno\programs\gp3\gp3\gp3.h(5) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\documents and settings\administrator\my documents\geno\programs\gp3\gp3\gp3.h(5) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>c:\documents and settings\administrator\my documents\geno\programs\gp3\gp3\gp3.h(6) : warning C4229: anachronism used : modifiers on data are ignored
1>c:\documents and settings\administrator\my documents\geno\programs\gp3\gp3\gp3.h(6) : error C2182: 'GP3CloseCom' : illegal use of type 'void'

What is going on here? Am I doing something wrong, or is there something messed up with the header file?

Re: trouble using dll

PJ Arends14-Oct-08 14:18

PJ Arends

14-Oct-08 14:18

The compiler does not know what HANDLE is. You have to #include <windows.h> before you include this header file.

oleg6314-Oct-08 9:56

oleg63

14-Oct-08 9:56

Just wondering,does anybody tried this enhancements of VS2008 MFC?
What pro and contras?

Thanks.

Creating an interface like norton antivirus

emmmatty114-Oct-08 8:42

emmmatty1

14-Oct-08 8:42

Hi,
In my application i need to put an interface with navigation like norton antivirus'interface(like graphical menu items in the left side of the app. Items will be displayed only if the user clicks a item in the left side.)

Please tell me how to begin.

Regards,
John

Re: Creating an interface like norton antivirus

David Crow14-Oct-08 10:07

DragDropHandlers for catch the copy

14-Oct-08 10:07

Well, it sounds like a splitter window with two panes. The one on the left is a list view that contains icons, and the one on the right could be some other view.

"Love people and use things, not love things and use people." - Unknown

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

alpha_one_x8614-Oct-08 7:02

alpha_one_x86

14-Oct-08 7:02

Hello, can you write an example for me (I am not able to do this) for with DragDropHandlers catch file copy or move and get this arguments to a program and not at the system.
For that's I use my own copier for do the copy.

Thanks for your help.

Re: DragDropHandlers for catch the copy

David Crow14-Oct-08 7:08