C / C++ / MFC Discussion Boards

How i can save DC(CPaintDC) or CDC in CBitmap?

humais5-Jul-10 5:49

5-Jul-10 5:49

How i can save DC or CDC in CBitmap??

i'm using following code to save CPaintDC (dc) into CDC(cdc) in OnPaint() function...

cdc=GetWindowDC();
cdc->BitBlt(100,100,600,600,cdc,0,0,SRCCOPY);

& now i want to save CDC in CBitmap file...so i can use it in CImage attach function....i have to use CreateCompatableBitmap function or CreateDIBSection Function or anything else...?? Confused | :confused:

Re: How i can save DC(CPaintDC) or CDC in CBitmap?

Richard MacCutchan5-Jul-10 6:47

Richard MacCutchan

5-Jul-10 6:47

Why not try some of the suggestions you have been offered? Endlessly reposting this question will not change the design of the Windows API, GDI or MFC.

It's time for a new signature.

Re: How i can save DC(CPaintDC) or CDC in CBitmap?

humais5-Jul-10 7:45

humais

5-Jul-10 7:45

thankx GOD . . . atlast i found the solution... Smile | :)

thank you every one for helping me..

How AfxWinMain() function is getting called?

ganesh.dp5-Jul-10 1:37

ganesh.dp

5-Jul-10 1:37

Can anybody explain me how the afxwinmain() is called?

Re: How AfxWinMain() function is getting called?

CPallini5-Jul-10 2:01

CPallini

5-Jul-10 2:01

Is called by WinMain, Nish explains you how, in his oldie-goldie article "MFC under the hood".
Smile | :)

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Re: How AfxWinMain() function is getting called?

Rajesh R Subramanian5-Jul-10 5:10

Rajesh R Subramanian

5-Jul-10 5:10

This book answers that question, and many more: Programming Windows with MFC by Jeff Prosise[^]

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Dynamic Scroll bar

Paulraj G5-Jul-10 0:23

Paulraj G

5-Jul-10 0:23

Hi Everybody,

Now i am creating N-Number of text boxes in a window. But the window showing particular no of textbox. after that the window does not scroll.

Now i need to scroll the window if the textbox is high numbers.

Any help will be appriciated.

Thanks.

G.Paulraj

Re: Dynamic Scroll bar

Richard MacCutchan5-Jul-10 0:32

Richard MacCutchan

5-Jul-10 0:32

Use a CScrollView[^] as your base window.

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Problem in attaching CBitmap to CImage's Attach()

humais4-Jul-10 22:29

humais

4-Jul-10 22:29

i'm trying to attach CBitmap to CImage,but itz not working.
/* CBitmap bmpCap;
CBitmap *pBmpOld;
CImage img;
these three r declared in CChildView class
*/
//following code is in OnPaint() function...

CRect rect;
CDC dcMem;
dc.TextOutA(20,20,"Humais");
GetClientRect(&rect);
bmpCap.CreateCompatibleBitmap(&dc, rect.Width(), rect.Height());
pBmpOld=dc.SelectObject(&bmpCap);

i'm getting runtime error...

Re: Problem in attaching CBitmap to CImage's Attach()

Niklas L4-Jul-10 22:43

Niklas L

4-Jul-10 22:43

I don't know what you are trying to do here, but to answer your question

img.Attach(bmpCap.Detach());
// do some painting with img
bmpCap.Attach(img.Detach());

pBmpOld should be a local variable. Probably img as well.

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Re: Problem in attaching CBitmap to CImage's Attach()

humais4-Jul-10 22:49

humais

4-Jul-10 22:49

i'm drawing shapes on CPaintDC dc....then i want to attach those shapes to img...so i can save them... can u please tell me proper steps?

Re: Problem in attaching CBitmap to CImage's Attach()

Niklas L4-Jul-10 23:04

Niklas L

4-Jul-10 23:04

This would be close (using only local variables)

CRect rect;
GetClientRect(&rect);

CBitmap bmpCap;
bmpCap.CreateCompatibleBitmap(&dc, rect.Width(), rect.Height());
CBitmap *pBmpOld = dc.SelectObject(&bmpCap);

dc.TextOutA(20,20,"Humais");

dc.SelectObject(pBmpOld);

CImage img;
img.Attach(bmpCap.Detach());

img.Save(...);

bmpCap.Attach(img.Detach());

...

home

Re: Problem in attaching CBitmap to CImage's Attach()

humais4-Jul-10 23:17

humais

4-Jul-10 23:17

i'm using save function,thats why i declare CImage & CBitmap in CChildView class..tell me now where i have to put

img.Attach(bmpCap.Detach());

i mean in save function or in OnPaint function??

Re: Problem in attaching CBitmap to CImage's Attach()

Niklas L4-Jul-10 23:27

Niklas L

4-Jul-10 23:27

In save.

You have the bitmap in bmpCap, so you only have to move the handle over to the CImage instance while saving, and then move it back again.

Make sure you're not creating the bitmap every time you enter OnPaint (should that not be OnDraw btw?). Verify that (HBITMAP)bmpCap == nullptr before creating it.

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How to call a function when dll is statically loaded?

narayanagvs4-Jul-10 20:14

narayanagvs

4-Jul-10 20:14

Hi,

I have a third party dll which actually is corruping fpcw register.Due to this my application crashes upon being launched.
I also have the code to fix, this is just a call to _controlfp() function.And I want to call it immediately after the third party dll is loaded.I want to put my fix in any of the dlls which get loaded after this one.Where can I call this code as all of these dlls are loaded statically?

Any suggestions would be helpful.

Thanks
Satya

Today is a gift, that's why it is called the present.

Re: How to call a function when dll is statically loaded?

«_Superman_»4-Jul-10 21:23

«_Superman_»

4-Jul-10 21:23

Call it in the entry point of your program (main or Winmain).
Statically linked DLLs are already loaded by the time the application entry point is called.

«_Superman_»

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Polymorphism in C

VS2008 and VS2010 installed on the same machine.

Chesnokov Yuriy4-Jul-10 19:30

Chesnokov Yuriy

4-Jul-10 19:30

Does VS2010 have .vcproj project compatibility with VS2008?

Will it be possible to open the same project in VS2008 after conversion in VS2010? or keep them both appended to the same project to be able to work with the same project in either VS2008 or VS2010?

Is it possible to install the both on the same machine?

Чесноков

Re: VS2008 and VS2010 installed on the same machine.

«_Superman_»4-Jul-10 19:44

«_Superman_»

4-Jul-10 19:44

It is definitely possible to install both on the same machine.
VS2010 will convert VS2008 projects when opened.
A new project file will be created with extension .vcxproj.
The old project file with extension .vcproj will remain unchanged.

The only file that is going to be overwritten is the .sln file.
After conversion, the .sln file will reference the .vcxproj file.

You will still be able to open the .vcproj files in VS2008.
If your solution has multiple projects, you will need to maintain 2 copies of the .sln file.
This will have to be done manually in which case, after conversion, create a new .sln file and add all the old .vcproj files into it.

«_Superman_»

I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Polymorphism in C

Re: VS2008 and VS2010 installed on the same machine.

Pavel Sokolov5-Jul-10 14:22

Pavel Sokolov

5-Jul-10 14:22

Just note, there is some MFC problems in VC2010.

Pavel Sokolov

How to calculate FLOPS per second

anitharosary4-Jul-10 19:02

anitharosary

4-Jul-10 19:02

Hi,
I am researching on CPU Stress Testing Functionalities
I have found we can stress test on FLOPS, Encryption, Compression, etc to test the CPU performance
Can anyone say how to calculate FLOPS per second?
Does anyone have any sample code for calculating FLOPS?

Thanks in advance.

Re: How to calculate FLOPS per second

Peter_in_27804-Jul-10 19:25

Peter_in_2780

4-Jul-10 19:25

Asking the same question three times in two different forums is NOT going to get you any more or better answers. Have you tried googling FLOPS or Benchmark?

Software rusts. Simon Stephenson, ca 1994.

Re: How to calculate FLOPS per second

anitharosary4-Jul-10 19:51

anitharosary

4-Jul-10 19:51

Sorry for the repetition. I've tried alot in google. After two months of searching, I'm posting this question in this forum

Re: How to calculate FLOPS per second

Tim Craig4-Jul-10 21:44

Tim Craig

4-Jul-10 21:44

FLOPS per second is zero if you have a constant clock rate. Laugh | :laugh:

Once you agree to clans, tribes, governments...you've opted for socialism. The rest is just details.

How to display an MFC View in a web browser?

Paul Steane4-Jul-10 2:47

Paul Steane

4-Jul-10 2:47

This seems such an obvious thing to need to do but I've failed to find any good references. Can anyone help please?

I have an MFC app which uses the Doc/View architecture. One of the document types it can display is a registered file type: the file is in a private binary format, and based on a code value in the file a config file is selected: the binary file is then rendered using the config file into a read-only text file in a CEditView within the app. OK so far? this works fine.

What I want to do is as follows. Let's say an intranet .aspx web page contains a link to the binary file, perhaps along with some summary text extracted separately. When the user clicks on the link, the view changes to the same text as would be displayed in my MFC app. What's the best way to do this? ActiveX control? other ideas?

This is a company intranet application, the binary file would be located on one of the company file servers. It is acceptable for my MFC app to require to be installed on the local machine, so any required controls/DLLs etc could be installed at the same time.

Re: How to display an MFC View in a web browser?

Eugen Podsypalnikov4-Jul-10 22:06

Eugen Podsypalnikov

4-Jul-10 22:06

Paul Steane wrote:
ActiveX control?

Yep

virtual void BeHappy() = 0;

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.