win32 windows with buttons

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May 25th, 2003, 10:27 PM

infamous41md

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win32 windows with buttons

I have a button class that creates a child window like this...
hButtonWnd = CreateWindow
(
TEXT("button"),
mCaption,
WS_CHILD|BS_DEFPUSHBUTTON,...etc

i want to take an action when the button is clicked. im trying to figure out how this button recieves messages. it does not have a WndProc. when the user does click in the space where the button is, no message gets send to the parent window WndProc. or at least not the WM_BUTTONUP messages taht are usually sent when a mouse button is clicked. reason why i have this class that doesnt fully work is b/c my teacher started working on it and never finished it, so all i have is code to create and show it.

May 26th, 2003, 03:54 AM

TechNoFear

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>> it does not have a WndProc.

Yes it does. All windows with the WS_CHILD use the WNDPROC defined for the parents HWND.

>>no message gets send to the parent window WndProc

Did you cast the HMENU param as an int ID#?

#define IDC_BUTTON1 40001//defined so as to not conflict with the values in resource.h (ie no repeats)
ie (HMENU)IDC_BUTTON1

Then msg's will be routed through the WM_COMMAND of the parents wndproc.

Code:

//Look for the resource ID in the msg
idControl	= GET_WM_COMMAND_ID( wParam, lParam) ;
//switch ctrl ID#'s
case IDC_BUTTON1:
if (BN_CLICKED == HIWORD(wParam))//button was clicked

Else use

SetWindowLong() to retrieve the current wndproc and subclass it to one you specify.

origButtonWndProc = (WNDPROC) SetWindowLong( hButton, GWL_WNDPROC, (DWORD) NewButtonWndProc);

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May 26th, 2003, 02:27 PM

infamous41md

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hey thanks man that made my life a lot easier. that's cool how easy it is to do that, i was thinking i was going to have to write a whole other wndproc.

edit: do you know how i could have it so that when a user right clicks on a name in my listbox i can have a small menu pop up like windows does? i understand how to realize the right click, and how to get the idx of the name selected, but how do get the menu there? is that a window class ?
also, i have an edit box class that is a child window as well. when the user types text into it, i want them to be able to push enter and have that send the text. when the edit box gets focus it sends a ID_ED_SEND_MSG message to my wndProc which i can handle in WM_COMMAND. but how can i obtain the action that the user took on that edit box? like if it is just a mouse click or if it is the enter which is what im looking for. i tried looking at the various wParam, lParam fields but none worked.

Last edited by infamous41md : May 26th, 2003 at 03:07 PM.

May 26th, 2003, 09:25 PM

TechNoFear

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>>when a user right clicks on a name in my listbox i can have a small menu pop up like windows does?

the LV sends WM_NOTIFY msg's. Look for NM_RCLICK in the code member of the NM_LISTVIEW struct.

Code:

case	WM_NOTIFY:
switch(wParam)
{
	case IDC_LISTVIEW:
	LView = (NM_LISTVIEW FAR *) lParam; 
	switch (LView->hdr.code) 
	{
		case NM_RCLICK:

or look for the WM_PARENTNOTIFY in the owners (parents) callback, depending on how you set up the Listview

Code:

case	WM_PARENTNOTIFY:
if(WM_RBUTTONDOWN == (WPARAM)wParam)
{
	GetCursorPos(&point);//find mouse pos to display menu
	hPopup=LoadMenu( hInst, MAKEINTRESOURCE( IDR_POPUPMENU1) );//load your menu
hTrackPopup = GetSubMenu( hPopup, 0 );//has to be a pop-up of the menu
iReturn = TrackPopupMenu( hTrackPopup, TPM_LEFTALIGN |TPM_RETURNCMD ,point.x ,point.y, 0, hWndParent ,0 );//find out the menu item clicked
//process

the menu has to be a pop-up. That is the items go down the menu (not across) with no header (top item you click to get the pop-up)

>> i want them to be able to push enter and have that send the text.

I would sub class the edit's WNDPROC and switch the WM_CHAR msg's.

Look for the WM_KEYDOWN, switch them looking for the VK_RETURN.

Make sure you have the ES_WANTRETURN | ES_MULTILINE style on the edit.

win32 windows with buttons

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