Thanks !

You have to draw some graphics first.

vector, map, and set and all stl containers. They do different jobs though! See these links: std::vector[^] std::map[^] std::set[^] I hope that helps - a bit, at least! Iain. I am one of "those foreigners coming over here and stealing our jobs". Yay me!

Hi, All new TCP connections begin with a SYN packet... you should use your favorite search engine to investigate a 'SYN Flood'. How To: Harden the TCP/IP Stack[^] Also... it is very difficult to protect against these attacks from the operating system... you will be better off using a high end router to limit the rate of SYN packets. Keep in mind that 'Saying No' consumes cpu cycles... and that there is technically no defense to a massive DDOS. The best defense is to unplug the network cable. :) Best Wishes, -David Delaune [UPDATE] Your problem has nothing to do with SYN Floods or DOS attacks... your source code has some serious problems.

thanks ! :)

may be is right , but is there any way to fix it ?

Koma Wang wrote: how to use it ? Simple - don't. No one wants to know if a connection is alive. What they want to know is whether the business logic is still functioning. And the only way to do that is to implement something that actually tests the functionality. The more fully it tests it the better. But at a minimum you can assure that the server is at least still responding to a message enough to return a response. A simple implementation is to send a do nothing request from the client at a configured interval if no other request has been sent in that period. And do NOT rely on such functionality to get around error checking legitimate requests. A server can go down right in the middle of a legitimate request.

Thanks ! :)

Koma Wang wrote: Why will appear this kind of circumstance? This makes no sense. :confused: Please explain. "One man's wage rise is another man's price increase." - Harold Wilson "Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons "Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather

Syntax for mysql_init: MYSQL *mysql_init(MYSQL *mysql) Try this: MYSQL *mysql; // Now initialize and get mysql if(mysql_init(mysql) == NULL) { //Some message saying that the initialization failed } Alternatively, you can pass the mysql object to the ThreadFun after initializing it in main thread. You talk about Being HUMAN. I have it in my name AnsHUMAN

Not sure (been a while since I used GDI), but maybe you should create a compatible bitmap and select it into the device context before drawing to it?

bmiColors member of BITMAPINFO is variable sized array. Its size can be zero or more depending on other attributes such as biClrUsed, biBitCount and last parameter of GetDIBits() which can be DIB_PAL_COLORS or DIB_RGB_COLORS. BITMAPINFOHEADER[^] Excerpt from above link. If biCompression equals BI_RGB and the bitmap uses 8 bpp or less, the bitmap has a color table immediatelly following the BITMAPINFOHEADER structure. The color table consists of an array of RGBQUAD values. The size of the array is given by the biClrUsed member. If biClrUsed is zero, the array contains the maximum number of colors for the given bitdepth; that is, 2^biBitCount colors. In our case, 2 ^ 8 = 256 color table entries exist. You may also want to look at BITMAPINFO[^]. If bmpInfo.bmiHeader.biBitCount = 0x01; then it is a monochrome bitmap and color table will have two entries (e.g. RGB(0, 0, 0) and RGB(255, 255, 255)). Color table is array of colors used in the bitmap.

Thanks ! I have a try soon. :)

thanks all the same. :-D

Why don't you use the debugger to see what's cr value, at runtime? :) If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile. This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke [My articles]

No problem. :) Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles] Nil Volentibus Arduum Please use <PRE> tags for code snippets, they preserve indentation, and improve readability.

The statement "delete this" is amusing. I always add the comment "// hari kari". Anyway, common practice is to keep a pointer to the modeless dialog in the object that creates it so you can just bring it forward if it is reinvoked ie., the pointer is not null. What I do in this case is I pass the address of that pointer to the dialog object so it can null it when it is closed - usually preceding the "delete this" statement. The PostNCDestroy method then looks like this : void CTestDialog::PostNCDestroy() { if( m_pSelf ) *m_pSelf = NULL; // null parent's pointer to us delete this; } That is the best and easiest way I have come up with to deal with the issue so far.