C/C++ :: The Length Of EditBox In Win32
Feb 15, 2014
That is my routine to catch a text from editBox (ID_EDIT2) and save in a file. The address of file is in (ID_EDIT1). The code is working.
void simplewrite(HWND hwnd){
HANDLE hFile;
DWORD dwWritten;
[Code]....
My problem is: I put the size of char array txtbuffer=[200]. If I have a editbox bigger than that, I'll get a error. In (editlength) I have the correct length of edit box. But I cant initialize my char txtbuffer[editglenth]=NULL cause editlength is a integer not constant.
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Aug 11, 2014
You told me that it's better to use UNICODE all the time.
What if the Win32 Api function doesn't have a UNICODE version.
For example CryptProtectData() takes a BYTE (DATA_BLOB *) which is an unsigned char?
[Code] ......
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Jan 28, 2014
I want to show and control mouse in Win32 Console. What should I do? And I want to learn MFC programing.
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Dec 18, 2012
I understand including the comctrl32 lib and header. I know to init common controls. I can create a tab window and add tabs to it.
I just can't seem to grasp of how to tell when a specific tab has been selected. I just need to know what to look for with winproc.
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Feb 28, 2013
I want to change my system IP, subnet mask, host name etc. using win32 VC++.
I've tried AddIPAddress function but that's not persistent.
I want to change it that it should be change without rebooting system and should be there after restarting the system.
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Apr 13, 2014
I am pretty new to windows programming, but i get around with small applications.
Now I want to create a window with 10 push buttons, and was just wondering if there is some smart way, maybe in a loop to create multiple buttons.
Also, on a very populated window, is there a way to maybe have the WM_CREATE commands stowed away in another cpp file? Just for readabilty.
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May 15, 2014
I have a Win32 C++ application which works pretty well, but I don't like the GUI and I want to replace it with one designed graphically, a la Windows Forms. What is the best strategy to port my code? I tried creating a new Windows Forms C++ application and got pretty far with it, but was stymied when trying to call my unmanaged functions on a button press. If I can't use Forms to add a GUI without completely rewriting the program, what's my best bet?
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Jul 9, 2013
I am trying to load an icon I created for my program. Relevant code is below:
Code:
//resource.h
#define IDR_MYMENU 103
#define IDR_MYICON 201
#define ID_HELP_NOTICE 40001
#define ID_HELP_ERROR 40002
#define ID_FILE_EXIT 40003
[Code] ....
For some reason, the icon fails to load. I ran a breakpoint at the line for the hIconSm and got this error for the variable:
Code: CXX0030: Error: expression cannot be evaluated
The icon image is in the source folder and was compiled via ImageMagick. Google is not giving me any info regarding the error and the icon combined.
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Nov 30, 2013
I am using visual studio 2012 on windows 7. but, when I have compiled my programs and run them on an older pc to test out its functions, I receive an error saying that the program is not a "valid win32 application." I have even tested this with a very simple hello world console application, but the problem still remains. Where is the error coming from? is the application corrupted during transport? (upload to internet) or are programs compiled on win 7 incompatible with win xp
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Feb 22, 2015
I am trying to get OpenGL to render inside of a Win32 api static control. I've gone through Nehe's tutorial [URL] on how to render to an entire window. I understand how to do that and I can do it, but I'm not totally sure how to get it to render inside of a static control(or any control). The idea is to have a gui built around an OpenGL view. how I could render inside a static or custom win32 control?
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Aug 14, 2014
Is it possible to call VC++ routines using a Win32 DLL form fortran 77??
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Sep 28, 2014
You place a breakpoint at one of locations within the message loop. But I want the breakpoint to trigger when I click on the application window, for example. But I can't, it went so fast so long as I switch from VS to the application program, the breakpoint is hitted again, then the application is frozen again. I don't know how to setup a conditional breakpoint.
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Oct 31, 2014
Is it possible to show a console window in a Win32 DLL?
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Jan 16, 2013
How can I call a dialog , which is present in a seperate Win32 resource DLL .
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Mar 21, 2013
I can tons of information by calling DeviceIoControl (such as device ID, device description, whether it's connected or not) since I couldn't do it all with WMI. But I haven't figured out how to get from DeviceIoControl the info that a call to WMI's Win32_PortConnector gets. Are there any calls, directly to DeviceIoControl or something else that for a given device ID or device description would get the PortConnector information?
I would have used a combination of Win32_PortConnector and DeviceIoControl calls but the trouble with PortConnector is that it doesn't provide any information that would allow one to figure out which device ID it belongs to. Why do I need to do this? Because I'd like to get a combination of all the information the two methods provide for a given device such as a USB port, and all I'm getting from Win32_PortConnector is these scant few fields with no other clue:
string Caption;
string ConnectorPinout;
uint16 ConnectorType[];
string CreationClassName;
string Description;
string ExternalReferenceDesignator;
datetime InstallDate;
[Code] ....
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Jan 7, 2013
My setup is as follows:
There is function written C++, that must be compiled to DLL. This DLL is linked to some CAD (computer aded design) tool, that has special interface for it.
I want to add to this function some GUI (graphical user interface). So the creation of a window is necessary.
I've tried already with Win32, but without success.
The problem is that CreateWindow function requires application instance handle, that is provided by Windows itself when window is created in "normal conditions".
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Sep 24, 2014
I know that if the structure doesn't fit into the stack, it needs to be put onto the heap. But what is maximum size of a win32 stack in usual case?
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Aug 10, 2013
I am writing a program to map keyboard and mouse to an xbox 360 controller with win32 and xinput. I have everything going fine but when im trying to control the mouse with the thumbsticks I get problems with the movement if my program has the focus it moves fine but when I put another window in focus the movement is over sensitive here is the code I am using
Code:
if(_controllerState.Gamepad.sThumbRX >= XINPUT_GAMEPAD_RIGHT_THUMB_DEADZONE) {
GetCursorPos(&mousepos);
profile->Buttons[6]->input.type = INPUT_MOUSE;
[Code] .....
I have tried everything to fix it.
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Nov 12, 2014
Exception Details: System.ArgumentOutOfRangeException: Length cannot be less than zero. Parameter name: length
using System;
using System.Data;
using System.Configuration;
[Code]....
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Nov 20, 2013
I'm trying some codes about string arrays and taking array length. But i have some problems. I can't get length of string and can't send to a function.
------------------------
#include<iostream>
#include<cstring>
#include<string>
using namespace std;
void GetLength(string);
std::string Words[]={"table","gun","programming"};
int main()
{std::string InputWord;
[Code]...
And how can send Matrix to other function?
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Oct 3, 2013
The programming problem is supposed to take a decimal number from a user and turn it into a binary number. Here is my code:
for (int i=0; i< count; i++) {
binary[i] = decimal % 2;
decimal = decimal/2;
} cout << binary[2] << endl;
decimal is the number entered by the user.
binary [] is the char array and count is... you know how many times the for loop will turn. So my question is, how do i know the length of the number ? Any function that shows the integer length ? because its impossible to know what count is equal to. like 100 is 3.
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Jan 29, 2015
I need to be able to find every possible permutation using all possible values of a char. But I have to make it be able to form permutations from a length of 1 to variable N. For example, if N=3, I need it to be able to come up with
0x00
0x01
.......
0x00 0x00
0x01 0x01
.......
0xff 0xff 0xfe
0xff 0xff 0xff
How could I do this. (I would like to avoid recursion, since N might be as large as 50 or 60 and using recursion would most likely cause a stack overflow)
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Apr 16, 2013
I'm working with arrays that might have NULL bytes in them and I'm wondering how to determine the length of the array or store it somewhere with the array (strlen() won't work because of the NULL, right?).
I've found advice like store the length of the array in the first byte of the array, but since sizeof(size_t) is 8 should I leave the first 8 bytes for the length?
Would it be better do define my own structure which would store the array and its length? What's the usual way these things are handled in practice?
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Apr 20, 2013
Code:
char line[BUFSIZ];
while ( fgets(line, sizeof line, file) != NULL ){
llen = strlen(line);
printf("%d - %s
",llen,line);
}
I get a full line printed but my llen is the size of my buffer. how do i get the total size om my line from the beginning to " "
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Feb 9, 2014
I was reading in a book I had about C that an array has at the very end a "null character" signifying the end of the string inside it, "/o". So that made me think, "I guess one needs to declare arrays as having 1 extra space than one expects the array to need. I wonder what will happen if I exceed the array length?" So I made a program to test it out. Here is the program/results:
Code:
#include <stdio.h>
int main(void){
char name[3];
printf("
What's your name?
");
scanf("%s", name);
}
[code]....
As you can see my name was able to fit in the array somehow even though I only allocated 3 bytes to the array. I tried again using my legal first name, Benjamin, and it was still able to fit. How is the array able to hold my name when I declared it as only having 3 bytes?
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Nov 23, 2013
Any good function that get the length of an integer in C++
I do know of str.length(), however i want something similar for integers
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