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hey all,
So I am reading a file into a char buffer[] and need to combine two of the values in the buffer into an int value. The Documentation for my device says that values 5 and 6 in the array are one value with MSB first. How can I put these values into an int?
thanks
- legit
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lets assume that u have a buffer of type (char *) called charbuffer
you can convert it like this (I havent tested it but it should work):
short *intbuffer = (short*)charbuffer;
now every consecutive two chars in charbuffer will be treated as 1 short (16-bit) integer in intbuffer.
regards
Mohammad
And ever has it been that love knows not its own depth until the hour of separation
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Mohammad A Gdeisat wrote: short *intbuffer = (short*)charbuffer;
now every consecutive two chars in charbuffer will be treated as 1 short (16-bit) integer in intbuffer.
FYI that won't work on an Intel x86 machine in his case because the most significant byte is
FIRST in the char array.
Mark
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then u can use masking and shifting to swap between hi-order and low-order bytes.
Regards,
Mohammad
And ever has it been that love knows not its own depth until the hour of separation
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const char* str_int = "777";
int i = atoi(str_int);
Convert a string to integer.[^]
I'd love to help, but unfortunatley I have prior commitments monitoring the length of my grass. :Andrew Bleakley:
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int intvalue = ((buffer[5] << 8) | buffer[6]) & 0x0000FFFF;
Edit: Forgot a parenthesis 
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Please help me write a simple Dialog base that can load an image to a frame
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You can use LoadImage or CImageclass for load an image
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Hi guys,
I create a popup context menu dynamically and this menu can contain many sub menus. I use InsertMenu function like this:
Menu.InsertMenu(i,MF_BYPOSITION,ID_FAV_BASE+i,element.strQuickName);
the problem is that the created menu is disabled, I want to handle the message in the OnCommand() handler, but when I call TrackPopupMenu() the added menu items are just disabled and I dont know how to enable them.
Thanks
Mohammad
And ever has it been that love knows not its own depth until the hour of separation
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See CMenu::EnableMenuItem()
In MFC you can use the command enablers in the parent window as well...
See ON_UPDATE_COMMAND_UI, ON_UPDATE_COMMAND_UI_RANGE, etc.
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No, it is not. The menus were disabled by the MFC framework because the have no message handlers for their associated IDs.
The strange thing is that I create the same menu Items with the same IDs twice, once as a menu attached to the main window, and once as a context menu, those that are attatched to the main window work flawlessly, but those that are used as context menu are always disabled!!!
Any idea?
And ever has it been that love knows not its own depth until the hour of separation
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Right. Like I stated, use command enablers in the window the menu is "attached" to.
Mark
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Is EnableMenuItem helpfuls?
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No, it is not. The menus were disabled by the MFC framework because they have no message handlers for their associated IDs.
The strange thing is that I create the same menu Items with the same IDs twice, once as a menu attached to the main window, and another time as a context menu, those that are attatched to the main window work flawlessly, but those that are used as context menu are always disabled!!!
Any idea?
And ever has it been that love knows not its own depth until the hour of separation
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void APIENTRY omfg_glDrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices)
{
if (MODELS_1)
{
show_damn_modelz();
}
if (MODELS_2)
{
show_damn_modelz();
}
if (MODELS_3)
{
show_damn_modelz();
}
if (MODELS_4)
{
show_damn_modelz();
}
(glDrawElements)(mode, count, type, indices);
}
/////////in opengl.h i have this
#pragma comment(lib,"OpenGL32.lib")
#pragma comment(lib,"GLu32.lib")
#pragma comment(lib,"GLaux.lib")
#include
#include
#include
void APIENTRY omfg_glDrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
//////// in dll main
bool WINAPI DllMain(HMODULE hDll, DWORD dwReason, PVOID pvReserved)
{
if(dwReason == DLL_PROCESS_ATTACH)
{
hTtnDll = hDll;
DisableThreadLibraryCalls(hDll);
sycoreReDirectFunction("kernel32.dll", "GetProcAddress", (DWORD)&pGetProcAddress);
return TRUE;
}
return FALSE;
}
and this is how i wanna detour it
DETOUR_TRAMPOLINE(void WINAPI glDrawElements_Trampoline(GLenum, GLsizei, GLenum, const GLvoid *indices), glDrawElements);
void WINAPI glDrawElements_Detour(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices)
{
// ur code
glDrawElements_Trampoline(mode, count, type, indices);
}
//////////////////////
bool WINAPI DllMain(HMODULE hDll, DWORD dwReason, PVOID pvReserved)
{
if(dwReason == DLL_PROCESS_ATTACH)
{
DetourFunctionWithTrampoline((PBYTE)glDrawElements_Trampoline,(PBYTE)glDrawElements_Detour);
hTtnDll = hDll;
DisableThreadLibraryCalls(hDll);
sycoreReDirectFunction("kernel32.dll", "GetProcAddress", (DWORD)&pGetProcAddress);
return TRUE;
}
return FALSE;
}
but i get errors and i dont know what should i do with the void APIENTRY functions ? please anyone could help me ?
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See here[^] and here[^]
You may be right
I may be crazy
-- Billy Joel --
Within you lies the power for good, use it!!!
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When I saw first link on status bar I guess its acquainted both of them are nice
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Hi all,
My application is an MDI application
I have an "open" button in one dialog box , which upon click, opens up a child window . But one i close the child window , i need to close the dialog also . I know that i should handle within the CChildFrame::OnClose() function,but i dont't know how to get the dialog handle and close it.
I have tried creating
CMydialog *dlg in the CChildFrame class
and invoking
dlg->ShowWindow(SW_CLOSE), but the dialog is not closing
Could you please tell me how to overcome this problem
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Try dlg->DestroyWindow() instead.
You also have to delete dlg at some point unless you've taken the steps to make the modeless
dialog self deleting.
Mark
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(Okie i have many a times heard that theres no such thing as a stupid question, so here goes)
Suppose the wav recorder api stores the sampled data over two characters. How do i read that sample into (one) float data type ???
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Why do you want to use a float? if you want to store two chars into something, you can very well use a WORD. can't you? chars (ASCII) is 8 bits long, which is a BYTE. Two bytes can be placed inside a WORD. So you may consider this:
<br />
char c1='a';<br />
char c2='b';<br />
WORD w1,w2;<br />
<br />
w1=c1<<8;<br />
w2 = w1|c2;<br />
:Gong: 歡迎光臨 吐 西批 :Gong:
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The two byte sample will be used for various mathematic manipulations so we need precision.
Could you also explain how the above code works ???
Thanks..
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What precision values are you storing inside a 'char' ?? I dont understand you. Can you give me some sample data?
hey btw, the << , | thing, let me explain you.
<br />
00000001 - char1<br />
00000010 - char2<br />
Now,
A word is about 16 bits.
so A Word(w1)->00000000 00000000
push the char1 to the upper 8 bits
<br />
w1=char1<<8;<br />
now,
<br />
w1= 00000001 00000000<br />
Now, OR the char2 value
<br />
w1|char2;<br />
00000001 0000000<br />
00000000 0000010<br />
----------------<br />
00000001 0000010<br />
----------------<br />
Now you have the two values inside w1.
:Gong: 歡迎光臨 吐 西批 :Gong:
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(I am not using it right now but) the wav recording API has an option for storing each sample's amplitude in either one byte or two byte. Now these amplitudes are to be mathematically manipulated several times later on. So if we do these operations on just 2 byte "data container" then i guess we'll loose lots of info.... so we need to convert the two byte samples into float data type. (Or maybe i'am not geeting things  )
Anyways thanks for the help ......
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