C / C++ / MFC Discussion Boards

Prakash Nadar17-Oct-05 16:30

17-Oct-05 16:30

I dont think it is a problem with your drawing, The problem is probably with the placement of the controls.

If the controls are overlaping that means, you have placed them like that.

or is the bitmap drawing beyond your required place.

or if you want the bitmap to be drawn over other contorls, consider making thouse contorls invisible.

-prakash

Transparent CBitmapButton

fjlv200515-Oct-05 7:27

fjlv2005

15-Oct-05 7:27

Hello,

Can somebody help me. I have a CBitmapButton and I want to hide parts or area with magenta color RGB(255,0,255). I think I have to create a class that derrives CBitmapButton some functions.. But am not familiar with graphics in EVC. Please help me how to do it. Confused | :confused:

Thanks and Good day..

dbt.h

karmendra_js15-Oct-05 5:33

karmendra_js

15-Oct-05 5:33

here is an strange problem.

i included a header file <dbt.h>

Now i used some of the structures defined in it.

when i right click on structure name and click goto definition it take me to dbt.h and show the definition.

but when i build the application it gives error saying undefined refrence for the same structure.

Why is this happening. What is the solution.

Thanks

Re: dbt.h

Prakash Nadar15-Oct-05 6:29

Prakash Nadar

15-Oct-05 6:29

is dbt.h made by you?

if yes, can you make sure that there is only one file in your project directory.

I used to have similar problem and figured that it was due to duplicate files.

-prakash

Disable linker warnings

leppie15-Oct-05 5:31

leppie

15-Oct-05 5:31

Hi all

I have searched high and low, but cant find a way to disable linker warnings. Sure compiler warnings can be dealt with in various ways, but I cant find a single option for the linker. Frown | :(

I tried passing the linker warning numbers to the compilers option too without luck. Any ideas?

^{xacc-ide 0.0.99-preview3}

Re: Disable linker warnings

Prakash Nadar15-Oct-05 19:13

Prakash Nadar

15-Oct-05 19:13

a suggestion,
instead of disableing the linker warnings try to resolve them, usally linker warnings when ignored makes the binary kinda unstable, It would crash without any reason and difficult to debug.

-prakash

Re: Disable linker warnings

ThatsAlok16-Oct-05 18:46

ThatsAlok

16-Oct-05 18:46

leppie wrote:
I tried passing the linker warning numbers to the compilers option too without luck. Any ideas?

what about this

#pragma comment(linker, "/include:__mySymbol")

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Disable linker warnings

leppie17-Oct-05 1:16

leppie

17-Oct-05 1:16

That wont help me though Poke tongue | ;-P

The warnings specifically, when you enable /NOENTRY.

MSVCRT.lib(checkclr.obj) : warning LNK4210: .CRT section exists; there may be unhandled static initializers or terminators
MSVCRT.lib(secchk.obj) : warning LNK4210: .CRT section exists; there may be unhandled static initializers or terminators

I know I can probably safely ignore that, but I'll rather remove them. Confused | :confused:

^{xacc-ide 0.0.99-preview5 now with C#, C, IL, XML, Nemerle, IronPython and Boo highlighting support!}

Exiting an application

karmendra_js15-Oct-05 2:51

karmendra_js

15-Oct-05 2:51

I want to exit an application programatically i will use

exit(0);

But some how i feel if i do this with MFC application, its not a good thing.

Can anyone tell me is it a safe way to exit an MFC application.

If any other approach is there plz let me know.

Thanks a lot

Re: Exiting an application

sunit515-Oct-05 3:23

sunit5

15-Oct-05 3:23

CWinApp::ExitInstance();

Re: Exiting an application

sunit515-Oct-05 3:26

sunit5

15-Oct-05 3:26

One can send WM_CLOSE message to the application

Re: Exiting an application

ThatsAlok15-Oct-05 4:49

ThatsAlok

15-Oct-05 4:49

karmendra_js wrote:

Can anyone tell me is it a safe way to exit an MFC application.

PostQuitMessage(...);

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Using CByteArray storing Image data into Database

snprani15-Oct-05 2:37

snprani

15-Oct-05 2:37

Hi

I am using PostgreSQL as my Database. I have derived one Table using CRecordset. I have to use CByteArray to store Images into that table. I am using this way. is there any wrong in my code plz help me.

CCitizenPhoto rs;
rs.AddNew();
rs.m_sno = sno;
CFile f;
f.Open("Photo.jpg",CFile::modeRead);
rs.m_photo.SetSize(f.GetLength());
f.Read(rs.m_photo.GetData(),f.GetLength());
f.Close();
rs.SetFieldDirty(&rs.m_photo);
rs.SetFieldNull(&rs.m_photo,FALSE);
rs.Update();
rs.Close();

when i am running this code it is giving Error as Data Truncated.
I have Initialized MAXSIZE with 36000.
RFX_Binary(pFX,_T("[photo]",m_photo,MAXSIZE);

When i am storing of 10K image it is storing nicely and i am able to retrieve also. But more than 10k it is giving error as Data truncated. it is unable to store and retrive. both places giving error as Data truncated.

Plz help me
Thans in advance.

Windows Startup

extus15-Oct-05 1:00

extus

15-Oct-05 1:00

Hi! Does anyone know how can i make my application starts when windows starts up, i mean using code not put the application in the startup folder! Smile | :)

. I think i must use the registry but i m not sure! Thanks!

------------------------------
If you can't find the
-- -- -- -- -- -- -- -- -- --
way..let the way find you..
------------------------------

Re: Windows Startup

ddmcr15-Oct-05 1:24

ddmcr

15-Oct-05 1:24

extus wrote:
Hi! Does anyone know how can i make my application starts when windows starts up, i mean using code not put the application in the startup folder!. I think i must use the registry but i m not sure! Thanks!

Try this :

CRegKey key;
LONG status = key.Open(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run");

if(status==ERROR_SUCCESS)
{
  key.SetValue("Path of your program","Name of your program");
}


key.Close();

do not forget to include atlbase.h in your application

"Success is the ability to go from one failure to another with no loss of enthusiasm." - W.Churchill

-- modified at 7:26 Saturday 15th October, 2005

Re: Windows Startup

Fired Fish15-Oct-05 1:29

Fired Fish

15-Oct-05 1:29

sure ,you must set Registry

let your application start up after windows starts up

and use API function.

----------------------------
Jerry yu
Chinese
programming fans

Re: Windows Startup

ThatsAlok15-Oct-05 4:48

ThatsAlok

15-Oct-05 4:48

extus wrote:
i! Does anyone know how can i make my application starts when windows starts up, i mean using code not put the application in the startup folder!. I think i must use the registry but i m not sure! Thanks!

In continuation With Giorgi:-
there are two more place from where you can start your application at window startup:-
#1 already told bu Giorgi
#2 HKEY_CURRENT_USER
code:- (just One change to Giorgi code)

CRegKey key;
LONG status = key.Open(HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Run");

if(status==ERROR_SUCCESS)
{
  key.SetValue("Path of your program","Name of your program");
}


key.Close();

#3 Make entry in %windir%\startup

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Where can I input parameter in VC7 when I debugger?

chenxiujie15-Oct-05 0:56

chenxiujie

15-Oct-05 0:56

Hello everyone!
I want to debug my program, but When start the program need one
parameter, where can I input the parameter in VC7, please help
me!
Thank you very much!

Re: Where can I input parameter in VC7 when I debugger?

Member 168985515-Oct-05 1:22

Member 1689855

15-Oct-05 1:22

For debugging purpose you can take variables instedof parameters

Madhu S. Kapoor

Re: Where can I input parameter in VC7 when I debugger?

S. Senthil Kumar15-Oct-05 1:49

S. Senthil Kumar

15-Oct-05 1:49

Right click on the project in Solution Explorer, click on Properties. Expand the treeview on the left and go to Configuration Properties->Debugging. Click on it and you'll find a textbox for entering "Command Arguments".

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: Where can I input parameter in VC7 when I debugger?

chenxiujie15-Oct-05 2:07

chenxiujie

15-Oct-05 2:07

Thank you for your reply.

But in my program it doesn't work. I donn't know the reason.
if I run my program in command line as this: "XXXD.exe /Debug "
it run normally. But when I debug it in program,
I fill the debugging's Command :XXXD.exe, and fill the "Command Arguments": /Debug, but it run as : "XXXD.exe"
it seems the "Command Arguments" doesn't work , Perhaps there is
something I should to set ?

Re: Where can I input parameter in VC7 when I debugger?

Fired Fish15-Oct-05 2:19

Fired Fish

15-Oct-05 2:19

what program why not say the detail.

----------------------------
Jerry yu
Chinese
programming fans

how to create a DIB bitmap with a array

daojinliu15-Oct-05 0:53

daojinliu

15-Oct-05 0:53

int the function OnDraw()，I want to create a DIB bitmap using the array pData,but I am not successful，Please help me.
//the array containing color information
unsigned char* pData=new unsigned char[768*576];
int y=0, x=0;
for(;y<576;y++)
for(;x<768;x++)
{
pData[x*3+y*768*3]=0;
pData[x*3+1+y*768*3]=0;
pData[x*3+2+y*768*3]=255;
}
//information header

BITMAPINFOHEADER FrameBmi;
FrameBmi.biSize=sizeof(BITMAPINFOHEADER);
FrameBmi.biPlanes=1;
FrameBmi.biCompression=BI_RGB;
FrameBmi.biClrImportant=0;
FrameBmi.biSizeImage=768*576*3;
FrameBmi.biClrUsed=0;
FrameBmi.biBitCount=24;
FrameBmi.biWidth=768;
FrameBmi.biHeight=576;
FrameBmi.biXPelsPerMeter = 0;
FrameBmi.biYPelsPerMeter =0;
//file header
BITMAPFILEHEADER pf;
pf.bfType=0x4d42; //"BM"
pf.bfSize=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER)+sizeof(char[768*576]);
pf.bfOffBits=sizeof(BITMAPFILEHEADER)+sizeof(BITMAPINFOHEADER);
pf.bfReserved1=0;
pf.bfReserved2=0;

//BITMAPINFOHEADER
LPBITMAPINFO lpbmi=(LPBITMAPINFO)GlobalAlloc(GMEM_FIXED,sizeof(BITMAPINFOHEADER));
ASSERT(lpbmi);
lpbmi->bmiHeader.biSize=FrameBmi.biSize;
lpbmi->bmiHeader.biPlanes=FrameBmi.biPlanes;
lpbmi->bmiHeader.biCompression=FrameBmi.biCompression;
lpbmi->bmiHeader.biClrImportant=FrameBmi.biClrImportant;
lpbmi->bmiHeader.biSizeImage=FrameBmi.biSizeImage;
lpbmi->bmiHeader.biClrUsed=FrameBmi.biClrUsed;
lpbmi->bmiHeader.biBitCount=FrameBmi.biBitCount;
lpbmi->bmiHeader.biWidth=FrameBmi.biWidth;
lpbmi->bmiHeader.biHeight=FrameBmi.biHeight;
lpbmi->bmiHeader.biXPelsPerMeter=FrameBmi.biXPelsPerMeter;
lpbmi->bmiHeader.biYPelsPerMeter=FrameBmi.biYPelsPerMeter;
lpbmi->bmiColors=NULL;

//创建DIB位图
CBitmap *OldBitmap;
HBITMAP bmp =::CreateDIBitmap((HDC)pDC,&FrameBmi,CBM_INIT,pData,lpbmi, DIB_RGB_COLORS);
ASSERT(bmp);
//
CBitmap bitmap;
bitmap.Attach(bmp);
CDC dcComp;
dcComp.CreateCompatibleDC(pDC);
OldBitmap=dcComp.SelectObject(&bitmap);
BITMAP bm;
bitmap.GetObject(sizeof(BITMAP),&bm);

// draw bitmap
pDC->BitBlt(0,0,768,576,&dcComp,0,0,SRCCOPY);
dcComp.SelectObject(OldBitmap);
delete [] pData;
GlobalFree(lpbmi);

help me!

protected, public and private

karmendra_js15-Oct-05 0:44

karmendra_js

15-Oct-05 0:44

I just got a lil confussed here.

I want to access a variable using the object of the class.

classXYZ objectname= new classXYZ();<br />
objectname.variablename=100;

so which access specifier is best for variablename.

Thanks.

Re: protected, public and private

S. Senthil Kumar15-Oct-05 0:51

S. Senthil Kumar

15-Oct-05 0:51

If that code is outside classXYZ, you have no choice, it must be declared public.

Regards
Senthil

Regards
Senthil
_____________________________
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