I cant figure out how make the Button visible proccessing WM_PAINT myself, it just get visible after pressing it..
//THE WM_PAINT message:
case WM_PAINT:{
RECT myrect;
//get the device contest for the current window-------------------
gsp_hdc = GetDC( hWnd );
if( !gsp_hdc ){
MessageBox( NULL, TEXT(" Error Getting DC!"), TEXT(" error"), MB_ICONEXCLAMATION | MB_OK );
gsp_error_id = GetLastError();
return 0;
}
//--------------------------------------------------------------
//paint---------------------------------------------------------
gsp_old_txtcolor = SetTextColor( gsp_hdc, RGB( 255, 0, 0 ) );
//gsp_old_bgcolor = SetBkColor( gsp_hdc, RGB( 0, 0, 0 ) );
SetBkMode( gsp_hdc, TRANSPARENT );
/* all the functions above returns
the not more current value, so
you can save it for backup */
TextOut( gsp_hdc, 0, 0, TEXT(" My text "), 9 );
DrawText( gsp_hdc, TEXT(" My other balacodation text,\r\nwith lots and lots of words...\r\njust to see what happens... "),
(int)strlen (" My other balacodation text,\r\nwith lots and lots of words...\r\njust to see what happens... "),
&gsp_textrect, DT_LEFT );
/* strlen counts the numbers of characters on a string */
//---------------------------------------------------------------
ReleaseDC( hWnd, gsp_hdc ); //cada GetDC precisa de um ReleaseDC
GetClientRect( hWnd, &myrect );
ValidateRect( hWnd, &myrect );//WM_PAINT donne! ( NULL apaga tudo )
}break;//THE BUTTON CREATION:
HWND gsp_button1;
gsp_button1 = CreateWindow( TEXT("Button"), TEXT("My Button"),
WS_CHILD|WS_VISIBLE|BS_DEFPUSHBUTTON,
300, 300, 150, 50,
gsp_hmainwnd,(HMENU) 100, hInstance, NULL );//THE MAIN WINDOW(parent):
HWND gsp_hmainwnd; //the window handle
gsp_hmainwnd = CreateWindowEx( WS_EX_APPWINDOW | WS_EX_OVERLAPPEDWINDOW/* | WS_EX_TOPMOST*/, //EX style
TEXT("GSP Main Windows Class"), TEXT("GSP Main Window"), //Name Classe, Name Window
WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_SYSMENU | WS_CAPTION | WS_SIZEBOX, //style
CW_USEDEFAULT, NULL, //x, y
CW_USEDEFAULT, CW_USEDEFAULT, //w, h
NULL, NULL, //pai, menu
hInstance, NULL ); //instance module, value?//THE WINDOW CLASS STRUCTURE RESGISTERED:
WNDCLASSEX gsp_wc;//the window class structure
gsp_wc.cbSize = sizeof( WNDCLASSEX ); //tamanho da estrutura(em bytes)
gsp_wc.style = CS_HREDRAW | CS_VREDRAW; //estilo da classe( varias opçoes CS_..)
gsp_wc.lpfnWndProc = gsp_MainWndProc; //pointer pro 'wndproc'
gsp_wc.cbClsExtra = 0; //class extra bytes
gsp_wc.cbWndExtra = 0; //window extra bytes
gsp_wc.hInstance = hInstance; //instance q tem o 'wndproc'
gsp_wc.hIcon = (HICON)LoadImage( NULL, TEXT("gsp_TsmIcon.ico"), IMAGE_ICON, 16, 16, LR_LOADFROMFILE|LR_SHARED);//LoadIcon( NULL, IDI_APPLICATION ); //large icon( ALT+TAB )TEM q ser NULL a hInstance..
gsp_wc.hCursor = LoadCursor( NULL, IDC_ARROW ); //cursor
gsp_wc.hIconSm = (HICON)LoadImage( NULL, TEXT("gsp_TsmIcon.ico"), IMAGE_ICON, 16, 16, LR_LOADFROMFILE|LR_SHARED);//small icon(caption, barr..)
gsp_wc.hbrBackground = (HBRUSH) COLOR_BACKGROUND + 1; //cor de fundo//pode ser: (HBRUSH) GetStockObject( BLACK_BRUSH );
gsp_wc.lpszMenuName = TEXT("RC_GSP_MAINMENU"); //nome do menu
gsp_wc.lpszClassName = TEXT("GSP Main Windows Class"); //nome da classe( identificador)
//--------------------------------------------------------------I dont get whats going on, since WS_VISIBLE is set...( I dont know what WS_VISIBLE is at all, I tried create my main window with WS_VISIBLE, but I STILL need to call ShowWindow, or notting is displaied )..
Not handling WM_PAINT myself solve the problem.
Using BeginPaint / EndPaint at the WM_PAINT solve the problem too.
So, what I have to do ?( I want proccess WM_PAINT myself, using GetDC / Release DC instead of Begin / EndPaint )
