Centralizar janela

[Hilton J. Marcon]

Olá.

Sou novato na programação C++ e iniciei um novo projeto no Code Blocks, Win32 Gui Project.

Compila bonitinho a primeira tela, mas eu gostaria de deixá-la centralizada.

Utilizei o código a seguir:

/* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           _T("Aplicação com interface"),       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           800,                 /* The programs width */
           600,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );

/*Centralizar janela*/
    RECT rect;
    GetWindowRect(hwnd, &rect);
    MoveWindow(hwnd, (GetSystemMetrics(SM_CXSCREEN)-rect.top)/2, (GetSystemMetrics(SM_CYSCREEN)-rect.left)/2, rect.top, rect.left, TRUE);
    

mas não deu muito certo.

Se eu comentar a parte do /*Centralizar janela*/ o form é criado com o tamanho correto.

Mas se eu usar esse código de centralização, a janela realmente fica centralizada, porém, fica com um tamanho muito reduzido.

Alguém poderia me ajudar?

[Jhonas]

exemplo

http://www.unidev.com.br/index.php?/topic/6258-cc-posi%C3%A7%C3%A3o-da-janela/

abraço

[Hilton J. Marcon]

<script type='text/javascript'>window.mod_pagespeed_start = Number(new Date());</script>

exemplo

http://www.unidev.com.br/index.php?/topic/6258-cc-posi%C3%A7%C3%A3o-da-janela/

abraço

Obrigado Jhonas, mas foi a partir desse exemplo que eu fiz o meu código.

Sou novato em programação C++ e não estou conseguindo identificar o problema.

[Jhonas]

tente isso

/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
_T("Aplicação com interface"), /* Title Text */
WS_OVERLAPPEDWINDOW, /* default window */
CW_USEDEFAULT, /* Windows decides the position */
CW_USEDEFAULT, /* where the window ends up on the screen */
640, /* The programs width */ ===> experimente alterar esse valor
480, /* and height in pixels */ ===> experimente alterar esse valor
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);

/*Centralizar janela*/
RECT rect;
GetWindowRect(hwnd, &rect);
MoveWindow(hwnd, (GetSystemMetrics(SM_CXSCREEN)-rect.top)/2, (GetSystemMetrics(SM_CYSCREEN)-rect.left)/2, rect.top, rect.left, TRUE);

====================================================================================

seu código esta diferente desse

case WM_CREATE:
{
RECT rect;
GetWindowRect(hwnd, &rect);


MoveWindow(hwnd, (GetSystemMetrics(SM_CXSCREEN)-rect.top)/2,
(GetSystemMetrics(SM_CYSCREEN)-rect.left)/2, rect.top, rect.left, TRUE);
}


definição da função MoveWindow():


Syntax

BOOL MoveWindow(
HWND hWnd,
int X,
int Y,
int nWidth,
int nHeight,
BOOL bRepaint
);

Parameters

hWnd
[in] Handle to the window.
X
[in] Specifies the new position of the left side of the window.
Y
[in] Specifies the new position of the top of the window.
nWidth
[in] Specifies the new width of the window.
nHeight
[in] Specifies the new height of the window.
bRepaint
[in] Specifies whether the window is to be repainted. If
this parameter is TRUE, the window receives a message. If

the parameter is FALSE, no repainting of any kind occurs.
This applies to the client area, the nonclient area

(including the title bar and scroll bars), and any part of
the parent window uncovered as a result of moving a child
window.

==========================================================

reveja o seu código com calma e faça alguns testes

abraço

[Hilton J. Marcon]

Obrigado Jhonas, vou revisar o código.