My problem is that i want to open an instance of internet explorer on click of a context menu item with a certain URL. I have the event handler function for context menu item. I wan only the code for the above mentioned work to be inserted into it.
I wonder if somebody could remind me the method of defining a struct where you can set the bits of a member directly, without using the bitwise OR or bitshift operators. ie. I have a struct with 2 members
The offset member requires only 4 bits, and the repaint only 1. Idealy they could be combined so that the Repaint member uses the high order bit of the same BYTE. I remember seeing a way to do this, possibly using a union, but I cannot remember how or where I saw it.
This is mirroring a register in some hardware I talk to. I can set the variable by twiddling individual bits: ChannelsOn.Bits.MasterOn = 1<code>, and also use it as a whole byte... <code>SendStuffToHardware (...., ChannelsOn.Mask, ....);
So, while its not a linked language construct, it's often handy.
Unions can also be usedto ensure the overall variable ends up the correct size.
I am having trouble understanding what it is your trying to accomplish, however I believe you want to manipulate the bits in these bytes indirectly without accessing struct members, although I can't imagine why you would want to do this. Perhaps you have a high performance application and are attempting to shave off a few operations in a critical function.
If speed is your goal, then you should work with the fastest datatype on a 32 bit operating system, sizeof(int). On a modern Intel Core 2 Duo the following function is the fastest, you should define bit masks in your application. The function does not generate any branching op codes, quite fast.
unsigned int bitset(unsigned int bits,unsigned int mask,bool flag)
bits = (bits & ~mask) | (-flag & mask);
I am Using RegEnumValue() to Obtain the Names of the Values in the Specified Registry. But Its Not Working correctly. I dont know where I am doing the mistake. According to me the code is perfectly OK. But see if u can Find any Bug and can HELP me.
When I debug the Following in Code it just Show me the Last Value Name int he Registry MyApplication while there is eight Values. I get Other Values as Empty String.(String Values).
The 4th parameter to RegEnumValue() ?
lpcValueName [in/out] should be the size of the buffer before the call, after the call its the number of characters returned, being in a for loop you should be setting that before the call everytime.