Modal common dialogs
Most of the Common dialog boxes like File open/save, font, color, page setup, print dialog etc opens on top on main window and takes the user input and then closes. User cannot interact with main window and the control jumps to the event procedure of popup dialog. It returns to main event when user selects okay or cancel and dialog returns. This type of dialogs are modal dialog box.
Modeless find replace
Find replace dialog is different than these dialogs. It takes user's input at the same time user can interact with the main window where the search is happening. This type of dialog is modeless dialog box. The processing happens in different GUI thread and user can switch between main dialog and this popup dialog.
About our authors: Team EQA
MFC hides WinMain in its framework and includes source file on WinMain(). This explains how framework calls global CWinApp::Initinstance() from entry WinMain.
This is constructed during global C++ objects are constructed and is already available when Windows calls the WinMain function, which is supplied by the ...
Define a custom Window class structure, Register the class name, CreateWindow, Show windows and write message get and dispatch loop statements. Define the Window CallBack procedure and write the handlers.
DispatchMessage() is a API which indirectly triggers the Window CallBack procedure. Message structure members from this function are passed to the CallBack procedure. CallBack procedure should implement event handlers depending on the need of the application.
LPARAM and WPARAM are the two parameters in Window CallBack procedure. They signifies parameters of various events. They are used in handing individual events.
We need to write WinMain and need to follow all these in a Win32 application. However we need not to write much if we are writing an application with MFC ...
Learn on Youtube