C / C++ / MFC Discussion Boards

First Prev Next

Re: Bitmap and clipboard

C^hris L^osinger4-Oct-01 8:23

C^hris L^osinger

4-Oct-01 8:23

sounds like you've got a DIB. have you tried displaying it (with something like StretchDIBits), just to be sure?

// Get source bitmap info
BITMAPINFO *pBMInfo = (LPBITMAPINFO)pDIB ;

// assumes a generic 24bit DIB
LPVOID lpDIBBits = (LPVOID)(pDIB + pBMInfo->bmiHeader.biSize);

// now blast it to the CDC passed in.
// lines returns the number of lines actually displayed
UINT32 lines = StretchDIBits(outHDC,
                     xPos, yPos,
                     outWidth, outHeight,
                     0,0,
                     inWidth,
                     inHeight,
                     lpDIBBits,
                     pBMInfo,
                     DIB_RGB_COLORS,
                     SRCCOPY);

that's the easiest way to tell if your DIB is correct/well-formed.

-c

------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com

Re: Bitmap and clipboard

#realJSOP4-Oct-01 8:42

#realJSOP

4-Oct-01 8:42

Yup, when I do a StrechDIBits, lines is equal to bmiHeader.biHeight.

Re: Bitmap and clipboard

C^hris L^osinger4-Oct-01 8:45

C^hris L^osinger

4-Oct-01 8:45

hmmm.. have you tried the clipboard code i posted above?

-c

------------------------------
Smaller Animals Software, Inc.
http://www.smalleranimals.com

Re: Bitmap and clipboard

#realJSOP4-Oct-01 8:49

#realJSOP

4-Oct-01 8:49

not yet - in the process tho...

Re: Bitmap and clipboard

Tomasz Sowinski4-Oct-01 7:10

Tomasz Sowinski

4-Oct-01 7:10

You can't just pass a dib handle to SetClipboardData - that would be too easy. You have to copy the contents into a global memory block and pass the handle of this memory block to SetClipboardData. DIBLOOK sample may be helpful; have a look at CopyHandle helper.

Tomasz Sowinski -- http://www.shooltz.com

Re: Bitmap and clipboard

#realJSOP4-Oct-01 7:16

#realJSOP

4-Oct-01 7:16

I've already tried the CopyHandle() method, and I get the same results.

Re: Bitmap and clipboard

Tomasz Sowinski4-Oct-01 7:17

Tomasz Sowinski

4-Oct-01 7:17

Can you blt the image to the screen?

Tomasz Sowinski -- http://www.shooltz.com

MCI CD Audio Mount and Eject?

Bryan Anslow4-Oct-01 6:10

Bryan Anslow

4-Oct-01 6:10

Hi,

I have an MCI application that reads/catalogs audio CD's using the CDDB Interface.

There are two things I would like to get it to do that it currently does not;
1) Recognise that a CD has been loaded into the drive, so that I do not need to have a menu item to add a new CD.
2) Eject the drive after the information has been cataloged.

I know that for 2) there are a couple of KB Articles, Q165721 and Q168180, but I would like a simpler, more universal method, if possible.

Many Thanks in advance for any info.

Bryan Anslow.

Re: MCI CD Audio Mount and Eject?

Tomasz Sowinski4-Oct-01 6:24

Tomasz Sowinski

4-Oct-01 6:24

Ejecting with MCI is easy. Assuming that you know the drive letter, send the following strings:

"open f: type cdaudio alias cdx0"
"set cdx0 door open"

cdx0 is just a sample alias. Any identifier should work.

Tomasz Sowinski -- http://www.shooltz.com

Re: MCI CD Audio Mount and Eject?

Bryan Anslow9-Oct-01 3:35

Bryan Anslow

9-Oct-01 3:35

Thanks Tomasz,

I use mciSendCommand() everywhere in this prog, so I found this worked;

mciSendCommand(_mciDevice, // Eject the CD
MCI_SET,
MCI_SET_DOOR_OPEN,
(DWORD)(LPVOID)&mciSet);

also, for finding out when a CD is inserted, I just added a line to my mainframe module (it's an MFC App)like;

ON_WM_DEVICECHANGE()

and the OnDeviceChange() function can find which device etc., by examining the passed parm,

Bryan.

Again: Are there any methods to construct a CFtpConnection object from a HINTERNET handle?

Chaos Lawful4-Oct-01 5:20

Chaos Lawful

4-Oct-01 5:20

I cannot find any useful functions from neither the MSDN nor the MFC source code. What can I do now? Please help me! Cry | :((

Law is meaningless without chaos.
Chaos without Law is equal to destruction.
Chaos and Law create our rich and colorful world.

Re: Again: Are there any methods to construct a CFtpConnection object from a HINTERNET handle?

NormDroid4-Oct-01 6:58

NormDroid

4-Oct-01 6:58

Have a look on this site PJ Naughter has written a class that does the job!

Norm Almond
Chief Technical Architect
FS Walker Hughes Limited

Re: Again: Are there any methods to construct a CFtpConnection object from a HINTERNET handle?

Chaos Lawful4-Oct-01 8:04

Chaos Lawful

4-Oct-01 8:04

I'm sorry to waste your time. But I don't know which article you refered to. Did you mean the FTPTransferDlg class? Confused | :confused:

Looking forward to your reply. Thank you.

Law is meaningless without chaos.
Chaos without Law is equal to destruction.
Chaos and Law create our rich and colorful world.

Deleting files in a program

Paresh Solanki4-Oct-01 4:39

Paresh Solanki

4-Oct-01 4:39

Can anyone tell me how to delete a file to the recycle bin programatically.

I can use CFile.Delete(), but this appears to delete the file completely, but what I would like to do is move the file into the recycle bin.

Thanks in advance for your help

Re: Deleting files in a program

Tomasz Sowinski4-Oct-01 4:44

Tomasz Sowinski

4-Oct-01 4:44

Use SHFileOperation with FO_DELETE flag.

Tomasz Sowinski -- http://www.shooltz.com

Re: Deleting files in a program

Tomasz Sowinski4-Oct-01 4:48

Tomasz Sowinski

4-Oct-01 4:48

One more thing: don't forget about FOF_ALLOWUNDO.

Tomasz Sowinski -- http://www.shooltz.com

Re: Deleting files in a program

Paresh Solanki4-Oct-01 5:42

Paresh Solanki

4-Oct-01 5:42

Thanks, That's just what I needed

How do I create a makefile from the command-line :confused:

Belarophon4-Oct-01 3:21

Belarophon

4-Oct-01 3:21

Hi @ all

I hope that somebody can tell me how I can create a makefile from the command-line (not from VC++ with project/export_makefile) from .dsp or .dsw files.

Thanks a lot

Re: How do I create a makefile from the command-line :confused:

Chaos Lawful4-Oct-01 3:31

Chaos Lawful

4-Oct-01 3:31

Why don't use the VC++'s project/export_makefile? It's very convinent. Confused | :confused:

Law is meaningless without chaos.
Chaos without Law is equal to destruction.
Chaos and Law create our rich and colorful world.

Re: How do I create a makefile from the command-line :confused:

Belarophon4-Oct-01 22:08

Belarophon

4-Oct-01 22:08

Is it possible or isn't it possible? I found a perl-script programm on the internet that can convert a .dsp-file to a makefile, but I don't wanna start learning perl now just because of this one 'problem' (I'm getting strange error messages while compiling this script...).

So I just wanna get a makefile without always being forced to open VC++.

I wanna use this command in another makefile (with recursive use of make) to make sure to be always up to date with the dependencies.

Max & Min buttons, AGAIN!

4-Oct-01 3:03

Hi,

I am wondering if it's possible for my MDI Child window to have only max in min buttons, with no "X" for close?

Is the only was to achieve this with WM_NCPAINT?

Thanks

Thread question

Christian Graus4-Oct-01 1:14

Christian Graus

4-Oct-01 1:14

I have a weenie problem. As I have probably mentioned ( ad nauseum, I know ) I am doing a GUI library that is in Win32 and exposes itself through a Python console. I've created a dialog that shows a progress bar and allows you to set a range and step through it. You can also specify a timeout, so it shows itself after a particular time, the idea is unless it's a long time doing the function, you don't get the dialog. ( It was not my idea, I think it sucks ).

Anyhow, it works UNLESS you use it in a real world situation, i.e. where the processor is actually doing something during the timeout. I did it initially with a timer, but the timer would fire when the dialog went out of scope ( well, just before, but when the calculations stopped ). So I put the dialog in a thread. It wouldn't show at all. Now I put a seperate thread into the dialog class ( we have a class based on code stolen from Jeffrey Richter's book and we overload it by changing the Run method, so an instance of the class is a link to another thread ). I pass in the hWnd of the dialog, and in the thread I specify a timer and the call ShowWindow(m_hWnd, SW_SHOW). I have established the timer now fires perfectly, but as soon as I try to access the HWND, which is not being used for anything in the main thread, it hangs until the main thread finishes calculating, and the HWND is deleted.

I am at a loss - what could be happening here ? I tried a critical section around using the HWND, which just froze the program. Personally I don't see the point, but it's been requested and it's becoming a matter of pride. I admit to knowing little about threading (it's high on my list), so it's probably something really obvious. I *am* concerned about the possibility the HWND cannot be used in a different thread to the one that created it, but I don't think so because I believe such handles must surely be system wide, and I know the main thread is not doing anything with it.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: Thread question

Tomasz Sowinski4-Oct-01 1:44

Tomasz Sowinski

4-Oct-01 1:44

Window created in one thread gets its messages from the thread message queue. If your dialog was born in thread A, it's goint to be fed with messages from the A message queue. Have no idea how exactly timers fit in this picture, but I feel that you should simply create the dialog in other thread.

Tomasz Sowinski -- http://www.shooltz.com

Re: Thread question

Christian Graus4-Oct-01 1:50

Christian Graus

4-Oct-01 1:50

I tend to agree, which is why I started with the instance of the thread class holding an instance my the dialog and creating it in the thread. The program froze, the GUI died and the window was never seen.

Christian

As I learn the innermost secrets of the around me, they reward me in many ways to keep quiet.

Men with pierced ears are better prepared for marriage. They've experienced pain and bought Jewellery.

Re: Thread question

Tomasz Sowinski4-Oct-01 2:03

Tomasz Sowinski

4-Oct-01 2:03

Are you sure the second thread is the GUI one? Maybe post some code.

Tomasz Sowinski -- http://www.shooltz.com

Last Visit: 31-Dec-99 18:00 Last Update: 1-Jul-24 3:05

Refresh

ᐊ Prev 1...17924 17925 17926 179271792817929 17930 17931 17932 17933 Next ᐅ

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