search for: h_edit

...n to add text to Rich text box. When they try to add texts in parallel, a mixed text appear. So I decided to use critical section. When main thread tries to add text, the text adds perfectly, but when the second thread tries to add text - it hangs my app :( . Here is the code in C++: Code: HWND__ *h_Edit = rtf_list->Handle; EnterCriticalSection(&cr_sec); CHARRANGE cr; cr.cpMin = 0; cr.cpMax = 0; // App hangs on this line SendMessage(h_Edit, EM_EXSETSEL, 0, (LPARAM)&cr); //..... LeaveCriticalSection(&cr_sec); Before this I use: Code: CRITICAL_SECTION cr_sec; InitializeCri...