[英]How to create an embedded text input box in win32 windows
我想創建一個嵌入在我的主窗口中的小框,它可以接受文本輸入並包含按鈕。 當我說嵌入式時,我的意思是我希望它無縫集成到我的主窗口中,而沒有自己的關閉按鈕。 我無休止地搜索了谷歌,並沒有找到不涉及 mfc 或 .net 的答案。 如何在原始的 win32 應用程序中執行此操作。 請將您的代碼添加到我的骨架中,如下所示。 謝謝!
#include <windows.h>
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("App") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, // window class name
TEXT ("App"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps ;
RECT rect ;
switch (message)
{
case WM_CREATE:
return 0 ;
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
您的問題不是很清楚,但您在 Win32 中動態創建文本框和按鈕的方式是使用CreateWindow
函數。 Win32 為控件注冊了特殊的類,您可以使用這些類作為第一個參數傳遞給CreateWindow
。
要創建一個文本框,調用是 -
CreateWindow("EDIT", 0, WS_BORDER|WS_CHILD|WS_VISIBLE, 56, 10, 50, 18, g_hWnd, 0, hInst, 0);
創建一個按鈕 -
CreateWindow("BUTTON", 0, WS_CHILD|WS_VISIBLE, 70, 70, 80, 25, g_hWnd, 0, hInst, 0);
您必須指定WS_CHILD
和WS_VISIBLE
樣式,並提供主窗口的句柄作為其父窗口。
您希望收到哪些所有消息?
例如,按下按鈕時發送 WM_COMMAND 消息。 按如下方式處理這些消息:
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc ;
PAINTSTRUCT ps;
RECT rect ;
switch (message)
{
case WM_CREATE:
return 0 ;
case WM_COMMAND:
{
switch(LOWORD(wParam))
{
case IDC_BUTTON:
/*
IDC_BUTTON is id given to button
This id is specified while creating window. If you are using
CreateWindow then it will be as follows:
CreateWindow("BUTTON", 0, WS_CHILD|WS_VISIBLE, 70, 70, 80, 25, g_hWnd, (HMENU)IDC_BUTTON, hInst, 0);
and in resource.rc file or in the beginning of code. Do "#define IDC_BUTTON 3456"
3456 is just a reference you can give any other no as well. Prefer using bigger number so that they can not conflict with existing ones.
*/
//do whatever you want to do here when button is pressed
break
}
}
break;
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
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